Tag: embryo

  • THE FOURTH STORY—BABY ANIMALS AND MAN

    As the days and months glided by, our little girls were greeted one autumn morning by the advent of a little baby brother. Wife had given consent, years gone by, for me to tell the foregoing stories of life; but, only a few months before the above event, she had requested the privilege of telling this last story, as the girls would naturally ask of her how the little fellow came. This she told them, in a way no doubt, better than I could have done.

    In lecturing to multiplied thousands of boys and many hundreds of girls, I have told the stories of life much as I did to my little girls, with this story added.

    Baby animals.—We will now study God’s plan of increase in the higher animals and man. We shall find many striking resemblances and interesting variations between the lower forms of life that we have studied and the higher forms that we shall now study. All along the ascending scale of life we have found male and female organs of sex, possessing male and female natures. We have found that the male organs of sex produce a fertilizing substance called pollen in plants and semen in animals; that the female organs of sex produce seeds in plants and eggs in animals. We have found that every new plant, fish, insect, and bird comes from the union of the pollen with the seed, or the semen with the eggs. This last fact is true of the higher animals and man. We found that the seed of the plants are fertilized in the ovaries of the mother organs; that eggs of fish are fertilized outside of the body of the mother; that the eggs of insects and birds are fertilized inside of the mother’s body. This last plan is also true of the higher animals and man. We found that the seed of plants were sown or planted in the soil; that the eggs of fish were deposited in water; that the eggs of insects and birds were laid in some specially arranged place for them, usually called nests. In the higher animals and man the young starts from a tiny fertilized egg and grows in an organ in the mother’s body, called the womb, until it is strong and old enough to be born.

    The earliest stage of plant life in the little seed is called an embryo. When the seed has been planted and the little embryo appears above ground, it is then a little baby plant. The earliest stage of animal life in the egg of the fish, insect or bird, is an embryo. The mother part of the plant stores up food in the seed and the growing embryo feeds upon this food, until its little roots have grown down into the soil where they can take up food from the soil and the blades or leaves are large enough to receive light and heat from the sun and food from the atmosphere. The mother fish, insect and bird store up food in their eggs for the little embryos to live upon until they are hatched. Among the higher animals and man, the embryo begins with the tiny fertilized egg in the mother’s womb and receives nourishment and life from the mother’s blood through a duct, called the placenta, which is connected with the mother’s womb at one end while the other end connects with the body of the embryo at a point called the navel. In this way the mother furnishes the young with all the air, food, water and life that it gets until it is born. Among the higher animals and man the young when born are very tender and helpless. For several weeks or months they are fed on milk from their mother’s breasts. In higher forms of life the birth of young is attended by greater sacrifice and suffering than in lower forms of life. For months, and in the case of man, for years, the parents must labor and sacrifice to feed, protect and educate them. Birth in the human family is attended by greater suffering and the little baby is more helpless and tender, and for this reason requires more tender care than the young of any other animal. You have observed that in the lower forms of life where the parents do not have to suffer to bring their young into{ the world or labor to provide for them food or shelter that they do not love their young. As we ascend the scale of life in our study, we find that love exists between the parents and young just in proportion as the parents suffer and labor for their young.

    One of the most impressive and effective ways of telling the story of life in man was told by a wise and queenly mother in the following true story. This mother introduces the story by telling how solicitous she became about her little boy when he was about seven or eight years old. He was in the public school where he was likely any day to hear the story of life from some wicked boy. She was anxious that her boy should hear this story first from his mother’s lips.

    How a mother told the story of life to her boy.—In telling the story, the mother said:

    One morning, the opportunity that I had been praying and watching for, came. I observed my little boy playing rather roughly, not cruelly, with the pet cat. Speaking kindly to him, I said, “Son, don’t be rough with the old cat; handle her gently.” “Why, mamma?” he replied. “Son, mamma cannot make the reason clear to you now, but you obey mamma and in about ten days, mamma will tell you a very beautiful story, and, then you will understand.” As those days glided by, with pride I observed the unusual attention and kindness he showed the old cat. One morning, about ten days later, he came running into my presence, perfectly delighted, wonderfully elated, and overflowing with joy, he invited me out the back way to see what he had found. I anticipated his discovery, but I wanted him to have all the pleasure. So, I offered him my hand while he proudly led the way. As we stepped from the back porch, turning he pointed his finger under the floor; I looked, and there was the old mother cat and by her side were four as beautiful little kittens, basking in the sunlight, as the human eye ever saw. He bragged about having found them; called my attention to their color and markings; and claimed two of them as his own.

    We sat down on a rustic seat where we could still see them. We admired their plumpness, color, eyes and playfulness and chatted together about them. At length I said, “Son, do you remember about ten days ago when you were playing rather roughly and I asked you to handle the old cat tenderly?” Promptly he replied; “Yes, mamma, and you promised me that in about ten days you would tell me a beautiful story that would explain why I should handle the old cat kindly. Can you tell me that story this morning?” “Yes, son, mamma is ready to tell you the sweetest and purest story that a mother can tell her son. When mamma asked you to be kind to the old cat, those fourlittle kittens were then in her body. That was why the old cat was larger than she is now. The little kittens were then much smaller and very tender, and, had you been rough with the old cat, you might have injured them; and, then, they might have been born crippled, deformed or dead. When they were born three or four days ago their little eyes were so tender that the full light of the sun would have put out their sight, so they were born with their eyelids closed and glued together. The old cat knew how tender their eyes would be, so three or four days ago she went away back under the dark floor and gave them birth. As they have grown older and their eyes have become stronger, every few hours the old cat has brought them a few feet nearer the light. Meanwhile, their eyelids have gradually opened until they can now look up at the sun as well as you can. If they had been born out in the open, the full light of the sun would have made their tender little eyes very sore or put them out.”

    By this time I saw that my boy was very anxious to ask me a question. I was just as eager for him to ask it. I believed that he was going to ask the very question that my mother heart longed for him to ask; the very question that I believed God wanted my little boy to ask. I paused and looked into his little upturned face. As his deep, true blue eyes met mine, spontaneously, naturally, seriously he enquired, “Mamma, was I once in your body, too?” “Yes, son, you were formed in mamma’s body, in a little nest or home underneath mamma’s heart. You started as a little cell. For two hundred and eighty long days, nine full months, nearly a whole year, you were growing in mamma’s body. Mamma knew that you were there and loved and prayed for you long before you were born. Mamma had to be careful not to meet with an accident lest you might be born crippled, deformed or dead. Mamma had to be cautious about the food she ate, the air she breathed, the water she drank, the exercise she took, all she thought and did; because you were united to mamma by a little cord filled with blood vessels, through which mamma was supplying you from her blood with all the materials necessary for your forming body, mind and soul. In this way you were being influenced by mamma. Mamma was anxious that you might have a healthy and perfect body and grow up to be a smart, good and great man. If mamma had been angry, untruthful or dishonest during these months that you were a part of her, you might have been born with an ugly disposition, tendency to steal or be untruthful. Mamma was very careful about all she thought, said and did during the months you were a part of her body.

    “Mamma knew about the day that you would leave your little home and come into this world. For hours mamma suffered great pain. The faithful doctor was present and did all he could to lessen mamma’s suffering. Papa stood at my side, held my hands in his, often stooped over and kissed my lips, cheeks and brow. As soon as you were born, the air rushed into your lungs and you cried, just as all little babies do when they are born alive. Mamma heard your baby cry and it thrilled her with joy known only to a mother, when she knows that her little baby is alive. But, son, when you were born and for many weeks and months, you were tiny, tender and helpless. No one in this world, and, God could not have found an angel in all of heaven who could have cared for you as well as mamma could. Mamma fed you at her breast, held you in her lap, fondled you in her arms and sung lullabies to you. When you were only a few weeks old you would have the colic. All night long your little body would be racked with pain and mamma would walk the floor with you, rub your little body and sing to you.” By this time my little boy was standing up close by my side, had both arms thrown around my neck, his little lips were kissing my cheek, and tears were rolling down his on to mine. Then he said, “Mamma, I am glad you have told me that story. I love you better now. I did not know that you loved and prayed for me before you ever saw me; that you were so careful that I might be well born; that you had to suffer so much when I was born; and that you cared for me so good when I was so small and when I was sick. This story will help me love you better and I will try never to disobey or tell you a falsehood.”

     

    Do you not see how much better it was for this boy to hear the story of his life from the pure lips of his loving mother, than to hear it first from the lips of some ignorant and wicked boy or man? Well this is the story of your life. You cannot understand now how much your mamma suffered in bringing you into this world. Then, both your father and mother have made many sacrifices for you and are deeply interested in your future. If you should make a shipwreck of life, I am sure that their old days would be spent in grief. How can you repay your parents for all their sacrifices? If you will keep your thoughts, words and actions pure, every time your parents see or think of you, they will be thrilled with joy and appreciation. Will you not now promise yourself and promise God that by His forgiveness of the past, grace and help now and in the future, that you will keep yourself pure? When you have done this will you not go and kiss mamma, and tell her that you love her better than ever before and that you are determined to live up to her prayers and wishes?

    Extract from EBook of Self Knowledge and Guide to Sex Instruction, by T. W. Shannon

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  • THE DETERMINATION OF SEX

    THE DETERMINATION OF SEX

    The term “The Determination of Sex” is employed in two general senses in scientific circles.

    The first usage is that of the biologist, and it includes within its scope merely the discovery and understanding of the causes which determine whether the embryo shall develop into a male or into a female. In the discussion of the subject from this standpoint there is but little, if any, attention given to the question of whether the sex of the unborn child may be determined by methods under the control of man. The biologist simply studies the causes which seem to lead to the production of an individual of one or the other sex, without regard to whether these causes, when discovered, may or may not be amendable to human control.

    An authority, speaking of this standpoint concerning the question referred to, says: “We may discover the causes of storms or earthquakes, and when our knowledge of them is sufficiently advanced we may be able to predict them as successfully as astronomers predict eclipses, but there is little hope that we shall ever be able to control them. So it may be with sex; a complete understanding of the causes which determine it may not necessarily give us the power of producing one or the other sex at will, or even of predicting the sex in any given case. Whether we shall ever be able to influence the causes of sex-determination cannot as yet be foretold; at present, biologists are engaged in the less practical, but immensely interesting, problem, of discovering what those causes are.”

    The second usage of the term, includes and embraces the idea of the voluntary determination or control of the sex of the future child, by means of certain methods or certain systems of treatment, etc. Of recent years, science has been devoting considerable attention to the question of whether or not man may not be able to produce any particular sex at will, by means of certain systems or methods of procedure. Many theories have been evolved, and many plans and methods have been advocated, often with the expenditure of much energy and enthusiasm on the part of the promulgators and their adherents.

    In this lesson there will be briefly presented to you the general consensus of modern thought on the subject, with a general outline of the favorite methods and systems advocated by the several schools of thought concerned in the investigation.

    Professor Doncaster, the well-known authority on the subject, says: “But little progress has been made in the direction of predicting the sex of any child, and, if possible, even less in artificially influencing the determination of its sex. When the general principles arrived at are borne in mind, it must be confessed that the prospects of our ever attaining this power of control or even of prediction are not very hopeful, but the possibility of it cannot be yet regarded as entirely excluded. The general conclusions arrived at are that sex is determined by a physiological condition of the embryonic cells, that this condition is induced, at least in the absence of disturbing causes, by the presence of a particular sex-chromosome. [A “chromosome” is a portion of the chromatin, or substance characteristic of the nucleus of the cell, this nucleus seemingly controlling the life-processes of the cell.] But there is evidence, which for the present at least cannot be neglected, that certain extraneous conditions acting on the egg or early embryo may perhaps be able to counteract the effect of sex chromosome.

    “Quite generally, then, there are two conceivable methods by which the sex might be artificially influenced in any particular case; firstly, if means could be found of ensuring that any particular fertilized ovum received the required chromosomes; and, secondly, by the discovery of methods which always effect the ovum or embryo in such a way as to produce the desired sex. Many suggestions for applying both methods have been made, some of which have attained considerable notoriety, but hitherto none of them has stood the test of practical experience. In the case of the higher animals, especially of the mammals, in which the embryo develops in the maternal uterus until long after the sex is irrevocably decided, it is obviously difficult to apply methods which might influence the sex after fertilization, even if it were certainly known that such methods were ever really effective.

    “Apart from the few experiments like those of Hertwig on rearing tadpoles at different temperatures, there have been a very few cases in which there is even a suggestion that the sex of the fertilized egg can be modified by environment, and the belief that this is possible has been entirely abandoned by many of the leading investigators of the subject. It is probable, therefore, that if it will ever be possible to predict or determine artificially the sex of a particular child, the means will have to be sought in some method of influencing the output of germ-cells in such a way that one kind is produced rather than the other. It is in this way that Heape and others interpret the results of their investigations; they find that certain conditions affect the sex-ratio of cells, and they explain the result by assuming that under some circumstances male-determining ova are produced in excess, and under other circumstances, female-determining.”

    Professor Rumley Dawson holds to the opinion that the male-determining and female-determining ova are discharged alternately from the ovaries. In woman one ovum is usually discharged each month, and it is maintained that on one month the ovum is male-determining, and in the next, female-determining. It is obvious that exceptions must occur, for boy and girl twins are quite common, but if the cases which support the hypothesis are taken by themselves, and the exceptions explained away, it is possible to make out a strong case in favor of this theory. Some authorities hold that the right ovary produces male-determining ova, and the left ovary female-determining, and that the two ovaries discharge an ovum alternately, but an impartial examination of the evidence for this belief shows that it rests on very slender foundations. Experiments on the lower animals have shown that after the complete removal of one ovary the female may produce young of both sexes. Women, also, have produced children of a particular sex after the corresponding ovary has been removed, and it is hardly possible to believe that the removal in all these cases was incomplete. On the whole it must be concluded that the theory is insufficiently supported by the evidence.

    Another widely promulgated and vigorously supported theory is that which holds that the sex of the future child may be determined by specific nutrition of the mother before conception, and in some cases after conception. Schenk’s theory, advanced about 1900, attracted much attention at the time. He based his method on the observation that a number of women whose children were all girls all excreted sugar in their urine, such as happens in the case of persons affected with diabetes. From this he suspected that the physiological condition which leads to the excretion of sugar was inimical to the development of male-determining ova, and that males could be produced by its prevention. He therefore recommended that those who desire a male child should undergo treatment similar to that prescribed for diabetes for two or three months before conception, and held that a boy would be produced by these methods. Although this method has had considerable vogue, it cannot be held to have been established on a scientific basis.

    Doncaster says “The general conclusion with regard to man must therefore be that if sex is determined solely by the spermatozoon there is no hope either of influencing or predicting it in special cases. On the other hand, there is considerable evidence that the ovum has some share in the effect, and if this is so, before any practical results are reached it will be necessary to discover which of two conceivable causes of sex-determination is the true one. It is possible that there are two kinds of ova, as well as two kinds of spermatozoa, and that there is a selective fertilization of such a kind that one kind of spermatozoon only fertilizes one kind of ovum, the second kind of spermatozoon the second kind of ovum. If this should prove to be the case, it is possible that means might be found of influencing or predicting that kind of ovum which is discharged under any set of conditions. Secondly, it is possible that the ova are potentially all alike, but that their physiological condition may under some circumstances be so altered that the sex is determined independently of the spermatozoon. * * * It is hardly possible to avoid the conclusion that the sex of the offspring may be influenced, at least under certain circumstances, by the mother. The search for means of influencing the sex of the offspring through the mother is not of necessity doomed to failure. No results of a really positive kind have been obtained hitherto, and some of the facts point so clearly to sex-determination by the male germ-cell alone in man and other animals that many investigators have concluded that the quest is hopeless; but until an adequate explanation has been given of certain phenomena discovered in the investigation of the subject, it seems more reasonable to maintain an open mind, and to regard the control of sex in man as an achievement not entirely impossible of realization.”

    Another writer on the subject has said: “Every individual among the higher animals, whether male or female, begins as an impregnated ovum in the mother’s body. Any such ovum contains elements of constitution from both of its parents. In the earliest existence of this impregnated ovum, there is a season of sexual indifference, or indecision, in which the embryo is both male and female, having the characteristic rudiments of each sex, only indifferently manifested. In this stage, the embryo is susceptible of being influenced by external conditions to develop more strongly in the one or the other direction and thus become distinctly and permanently male or female. It is evident that this is the season in the development of the individual in which influencing conditions and causes must operate in deciding its sex, although it is possible in some of the lower animals to alter the tendency of sex in the embryo from one sex to the other, even after it has been quite definitely determined. It is well established, in fact, that differences do not come from a difference in the ova themselves; that is, there is not one kind of ova from the female which becomes female, while other ova become male, for it is possible to alter the tendency toward the one sex or the other after the ovum has been fertilized and the embryo has begun its career of development. This possible change in sex tendency in the embryo also proves that sex is not decided by a difference in the spermatozoa; that is some of the sperm cells from the father are not male, while others are female, in their constitution.

    “It is incorrect to suppose, as has been held by some theorists, that one testicle give rise to male spermatozoa and the other to female spermatozoa, for both male and female offspring have been produced from the same male parent after one testicle or the other has been removed. The same is true in cases in which either ovary has been removed from the mother; that is, male and female offspring are produced from mothers in whom either ovary has been removed. In like manner, the sex of offspring is shown not to be materially affected by the comparative vigor of the parents; thus, a stronger father than mother does not necessarily produce one sex to the exclusion of the other. These negative decisions are important because they simplify the solution of the problem of sex-determination, by excluding, more or less fully, various causes which have been supposed to operate quite forcibly in deciding the sex of offspring. Some of the more positive agencies that enter into the determination of sex are found (1) in the influence of nutrition upon the embryo during its indifferent stage of sexual development, and (2) in the constitution and general condition of the mother before and during the early stages of pregnancy. These two factors appear to enter more fully than any others in the decision of the sex in offspring, and deserve the greatest consideration. The influence of food in supplying the embryo with nourishment for its development is, perhaps, the most potent of these determining causes.”

    Investigators along the line of theory indicated in the above last quotation, i. e., the theory of sex determination by means of nourishment of the mother and embryo, have presented a volume of reports which demand respectful consideration. The general report may be said to be the discovery that abundant nourishment during the period of sexual neutrality tends to produce females; while lack of abundant nutrition during such period tends to produce males.

    These experiments, of course, have been chiefly performed upon the lower animals. The frog has been a favorite subject of such experiments—the tadpole stage being the one selected, because in that stage there exists a lack of sex, the stage being one of sex neutrality. Professor Yung’s celebrated experiments will illustrate this class of experiments. Here were chosen 300 tadpoles, which when left to themselves manifested a ratio of 57 prospective females to 43 prospective males. These were divided into three classes of 100 tadpoles each. Each class was then fed upon one of several kinds of nutritious diet in order to ascertain the change in sex-tendency due to such food. The first set, with an original ratio of femaleness of 54 to 46, were fed abundantly on beef, and the ratio of femaleness was changed to 78 to 22. The second class, with a ratio of femaleness of 61 to 39, were fed on fish (specially nourishing to frogs), and the ratio changed to 81 to 19. The third class, with a ratio of 56 to 44, were fed upon a still more nutritious diet (i. e., that of frogs’ flesh), and the ratio was raised to 92 to 8. In short, the experiments showed that the increase of nourishment in diet changed every two out of three male-tendency tadpoles into females. The experiment was held to prove that a rich diet, affording nourishment, during the period of sexual neutrality in the embryo, tended to develop femaleness.

    The advocates of this theory also point to the instance of the bees. With the bees, the larva of ordinary worker-bees are fed ordinary food, and do not develop sex; while the larva which is intended to produce the queen-bee is fed specially nutritious “royal food,” and consequently develops larger size and full female sex powers. If the queen is killed, or dies, the hive of bees proceeds to produce a new queen by means of feeding a selected larva with the “royal food” and thus developing full femaleness in it. It is said by some authorities that in cases in which some other of the larva accidently receive, through mistake, crumbs of the “royal food,” they, too, grow to an extraordinary size, and develop fertility. This fact is held by the advocates of the nutrition theory to go toward establishing the fact that abundant nourishment of the embryo, during the neutral stage, tends to produce femaleness in it. They also claim that caterpillars which are very poorly nourished before entering into the chrysalis stage usually develop into male butterflies, while those highly nourished in the said stage tend to become females. Experiments on sheep have shown that when the ewes are particularly well nourished the offspring will show a large proportion of females.

    A writer, favoring the theory in question, says: “In general, it is reasonable to infer that the higher sexual organization which constitutes the female is to be attained in the greatest number of cases by embryos which have superior vital conditions during the formative period. Among human beings, some facts of general observation become significant in the light of the foregoing inferences. After epidemics, after wars, after seasons of privation and distress, the tendency is toward a majority of male births. On the other hand, abundant crops, low prices, peace, contentment and prosperity tend to increase the number of females born. Mothers in prosperous families usually have more girls; mothers in families of distress have more boys. Large, well-fed, fully developed, healthy women, who are of contented and passive disposition, generally become mothers of families abounding in girls; while mothers who are small or spare of flesh, who are poorly fed, restless, unhappy, overworked, exhausted by frequent childbearing, or who are reduced by other causes which waste their vital energies, usually give birth to a greater number of boys. As a general proposition, the facts and inferences tend to establish the truth of the doctrine with women, that, the more favorable the vital conditions of the mother during the period in which the sex of her offspring is being determined, the greater the ratio of females she will bear; the less favorable her vital conditions at such times, the greater will be her tendency to bear males. That many apparent exceptions occur does not disprove the general tendency here maintained. Moreover, it is impossible to know in all cases what were the conditions of the mother’s organism at the time in which her child was in its delicate balance between predominant femaleness and maleness; else many cases which seemingly disprove the proposition would be found to be forcible illustrations of its truth. Still further, it is probable that other causes besides those here mentioned act with greater or less effect in determining the sex of offspring.”

    Based upon this general theory of the relation of nutrition to sex-determination, many methods and systems have been devised by as many authorities, and have been followed and promulgated by as many schools. Without going into the almost endless detail which would be necessitated by a synopsis of these various methods and systems, it may be said that they all consist of plans having for their object the decrease of nutrition of the woman in cases in which male children are desired, and the increase of nutrition in cases in which female children are sought for. This increase or decrease in nutrition is enforced for a reasonable period before the time selected for the conception of the child, and also for a reasonable period after the time of conception. The decrease in nutrition does not consist of “starvation,” but rather of a “training diet” similar to that followed by athletics, and from which dietary all rich foods, sweets, etc., are absent. In fact, the average dietary advocated by the “Eat and Grow Thin” writers would seem to be almost identical with that of the “male offspring” theorists.

    Many persons who have followed the methods and systems based on the nutrition theory above mentioned claim to have been more or less successful in the production of the particular sex desired, but many exceptions to the rule are noted, and some writers on the subject are disposed to regard the reported successes as mere coincidences, and claim that the failures are seldom reported while the successes are widely heralded. The present writer presents the claims of this school to the attention of his readers, but without personally positively endorsing the idea. He is of the opinion that the data obtainable is not as yet sufficient to justify the strong claims made for the theory in some quarters; but, at the same time, he does not hesitate to say that there are many points of interest brought out in the presentation of the theory, and that many thoughtful persons seem to accept the same as reasonably well established and logical.

    Another theory which has been heard of frequently of late years is that in which it is held that the ova are expelled in alternating sex, each month. Thus, if a male ovum is expelled in January, the February ovum will be a female one, according to this theory. Under this theory if the date of conception of a child be ascertained, and the sex of the child noted at its birth, it is a simple matter to count forward from the menstrual period following which the child was conceived, and thus determine whether the ovum of any succeeding period is male or female. It should be noted, however, that the periods are regulated by the lunar months, and not the calendar months. The fact that twins of different sexes are sometimes born would seem to disturb this theory—but not more than any other theory of sex-determination voluntarily produced, for that matter. The several schools explain this apparent discrepancy by the familiar saying that “exceptions prove the rule.”

    Another theory of sex-determination is that which holds that when conception occurs within a few days after the last day of menstruation, the child will be a girl; and that when conception occurs at a later period, the child will be a boy. Methods and systems based upon this theory are also reported as being reasonably successful in producing satisfactory results. But, inasmuch as there appears to be a great difference in individual women in this respect (even according to the claims of this school of sex-determination), it would seem that it would be difficult to proceed with certainty in the matter in most cases. One of the writers advocating this method, says: “Conception within five days after the end of the menstrual period is almost certain to produce a girl child; within five days to ten days, it may be either a boy or a girl; from ten to fifteen days, it is almost sure to be a boy; from eighteen to twenty-five days is the period of probable sterility, in which conception is extremely unlikely to occur.”

    In conclusion, it may be said that Nature undoubtedly has certain rules of sex-determination which govern in these cases; and that it is possible if not indeed probable that these rules may some day be discovered by man, and turned to account; but that it is very doubtful whether the secret has as yet been solved by the investigators. The writer may be pardoned for suggesting that, in his opinion, if the discovery is ever made it will likely be found to be very simple—so simple that we have probably overlooked it because it was in too plain sight to attract our attention. Nature’s methods are usually very simple, when once discovered. She hides her processes from man by making them simple, it would seem.

    PRIVATE Sex Advice to Women By R. B. Armitage, M. D.

    For Young Wives and those who Expect to be Married.

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  • GESTATION OR PREGNANCY

    GESTATION OR PREGNANCY

    Gestation is “the act of carrying young in the Uterus, from the time of conception to that of parturition.” Conception occurs at the moment of the impregnation of the ovum; parturition is the act of delivery, or childbirth. Pregnancy is “the state of being with child.” The terms “period of gestation,” and “period of pregnancy,” respectively, are employed by medical authorities to designate the time during which the mother carries the young within her own body—from the moment of the impregnation of the ovum until the moment of the final delivery of the child into the outer world.

    The term of pregnancy in woman continues for over nine calendar months (or ten lunar months)—from about 275 to 280 days, though in exceptional cases it may be terminated in seven calendar months, or on the other hand may continue for ten calendar months. The usual method is to figure 280 days from the first day of the last menstruation. A simple method of calculating the probable date of delivery is as follows: Count back three months, and then add seven days, and you will have the date of probable delivery. Example: A woman’s first day of last menstruation is March 28. Counting back three months gives us December 28; and adding seven days to this gives us January 4, as the date of probable delivery. There will always be a possible margin of a few days before or after the ascertained probable date—but the delivery will very closely approximate said date. Ignore the shortage of days of February in this calculation, the same being covered by the general margin allowed.

    Development of the Impregnated Ovum. In the preceding lesson we terminated our consideration of the impregnated ovum at the point at which, after the process of segmentation, the “primitive trace” had appeared. This primitive trace appears as an opaque streak, or straight line, formed of an aggregation of cells of a distinctive quality. This delicate “trace” or “streak” is the first indication of the form of the coming child. It is the basis, pattern, or mould, in or around which the spinal column is to be formed, and around which the entire young body is to be developed by the wonderful and intricate processes of dividing and reduplication, and the folding and combination of cells. From one end of this “trace” develops the head; from the other end develops the lower end of the spine. At a later stage there appear tiny “buds” in the positions at which the arms and legs should be; these gradually develop, and their ends split into tiny fingers and toes, and finally are transformed into perfect little arms and legs, miniatures of those of the adult human being.

    The term “the embryo” is employed to designate the developing young creature in the earlier stages of its development, particularly before the end of the third month of its existence. After the end of the third month the embryo is called “the fetus.” In the short space of 280 days the young creature evolves and develops from a single simple cell into a complex organism—a perfect miniature human being. Nature works a wonderful miracle here, and yet so common is it that we take it all as a matter of course, and lose sight of the miracle. From the most simple forms are formed in the developing creature the most complex organs and parts. The heart is formed from a tiny straight line of cells, by enlargement and partition. The stomach and intestines, likewise, develop from a tiny straight line of cells arranged as a tiny tube—the stomach is formed by dilation of one part of the tube, while the large intestine experiences a similar though lesser distention and a greater growth in length; the smaller intestines being formed by growth in length and circumference. The other organs evolve from similar simple beginnings.

    The embryo is nourished during its earlier stages by means of the “yolk sack,” or “umbilical vesicle,” which is outside the body of the embryo, being joined to it by means of the umbilical duct. This yolk sack (originally formed by a “drawing together” in the ovum, which thus separates itself into two portions or areas) is an important feature of the life of the embryo, as it nourishes and sustains it in its earlier stages. Blood vessels form in this yolk sack, and after a time its fluid is absorbed, and after the third month the sack gradually disappears.

    After the passing away of the yolk sack, the embryo is nourished and sustained by the “allantois,” another peculiar sack which is formed. This sack readily becomes filled with blood-vessels, and serves to nourish the embryo by sustenance obtained from the body of the mother through the walls of the Uterus, a direct communication with the blood-vessels of the mother thus being secured. The blood in the embryo, and that in the mother, come into close contact, thus allowing the embryo to be nourished by the blood of the mother. After a time, in turn, the allantois diminishes and dwindles away, its offices being taken up and performed by the “placenta” or “afterbirth.”

    The Placenta or Afterbirth. The Placenta, or afterbirth, is a round, flat substance or organ, contained within the Uterus, by which communication and connection is established and maintained between the fetus and the mother, by means of the umbillical cord. It is a flat, circular mass, about seven inches in diameter, and weighing about sixteen ounces. It is attached to the sides of the Uterus of the mother during the period of gestation, and is expelled from the body of the mother, as “the afterbirth,” after the birth of the child.

    Let us pause a moment, and reconsider the several steps in Nature’s plan for nourishing the embryo and fetus. In the first place, as we have seen, there is the yolk sack or umbillical vesicle, filled with a fluid which nourishes the embryo. This gradually disappears in time, and is replaced by the “allantois” which by connection with the walls of the Uterus is enabled to nourish the fetus from and by the blood of the mother. For a short time, however, the embryo is nourished by both the yolk sack and the allantois. Then the allantois assumes the entire task, and the yolk sack passes away. Then, later, the placenta replaces the allantois, and the latter passes away as did its predecessor. The placenta works along the same general lines as the allantois, but is a far more complex way and with a much higher degree of efficiency, as we shall see presently.

    The placenta is connected with the body of the fetus by what is known as “the umbillical cord.” The “umbillicus” or “navel” in the human being marks the place at which the umbillical cord entered the body of the fetus, from which it was severed after the birth of the child. The purpose of the umbillical cord is to contain and support the umbillical arteries and veins through which the fetus obtains nourishment from the placental substance, and through which the return blood flows. The rich red arterial blood is carried from the placenta to the fetus, and is then distributed over the body of the fetus, nourishing and building it up; the dark venous blood, laden with the waste products of the body of the fetus, is carried back to the placenta, there to be repurified and rendered again rich and nourishing.

    The story of the circulation of the blood of the fetus is most interesting. Although the fetal blood is derived from that of the mother, as we have said, yet the maternal blood does not pass directly from the circulatory system of the mother into that of the fetus; nor does the blood of the fetus return directly into the circulatory system of the mother. In fact, the fetal blood never comes in direct contact with that of the mother, or vice versa. The fetus has an independent circulatory system of its own, and yet, at the same time, from the moment of the placental connection until the moment of childbirth, all its nourishment is derived from its mother.

    The secret of the above paradoxical statement is made apparent when we understand the meaning of the scientific term “osmosis.” Osmosis is “the passage of a fluid through a membrane”; it is a chemical process, caused by the chemical affinity between two liquids or gases separated one from the other by a porous diaphragm or substance. In the process of osmosis in the case before us, the fetal blood takes up nourishing substances and oxygen from the blood of the mother, and passes on to the latter the waste products of the fetal system, by means of passing these substances through the thin porous membranes which separate the two independent systems of blood vessels, i. e., the system of the fetus, and that of the mother. Before birth, in fact, the fetus has its blood nourished and oxygenated by means of the food partaken of by its mother, and the oxygen taken in by the mother in her breathing. After its birth, the infant eats and breathes for itself, and thus nourishes its blood supply directly, instead of receiving it indirectly from the mother.

    The Placenta begins to be formed about the third month of gestation, and continues to develop steadily from that time. At the time of the delivery of the child the Placenta covers nearly or quite one-third of the inner space of the distended Uterus of the mother. The total “afterbirth” consists of the Placenta, the umbillical cord, and the remaining membranes of the ovum, all of which are expelled after the birth of the child.

    The Amnion. An important appendage contained in the Uterus in connection with the developing fetus is that known as “The Amnion.” This is an inner sack which forms within the womb, and which serves to enclose the fetus, and also to sheath the umbillical cord. The Amnion encloses the embryo very snugly during the early stages of its development, but it gradually becomes distended with a pale watery fluid, known as “the amniotic fluid,” the purpose of which is to “float” the fetus and to give it mechanical support on all sides. This fluid is composed of water carrying in solution small quantities of albumin, urea, and salt.

    Sex in the Embryo and Fetus. It is impossible to determine the sex of the embryo during its early stages. During the fourth week the first traces of the sexual glands appear, but not until the fifth week can the sex be determined even by the microscope. If the embryo is to become a male, certain ducts are transformed into convoluted tubules, and each is attached to the testes which have been formed from the genital nucleus. If the embryo is to become a female, the ducts join to form the uterus and vagina, other portions being transformed into the fallopian tubes and connecting with the ovaries which have been formed otherwise. The outer genitals appear in the early stages of the embryo, but there is no apparent distinction between the sexes, the external organs being the same in all cases, and consisting of a small tubular organ with a small lateral fold of skin on either side. Later, in the male, a groove appears on the under side of this primitive organ, thus forming the urethra, the scrotum being formed from the folded skin at the side. In the female, the primitive organ ceases to develop as in the male, and thus becomes proportionately smaller, and evolves into the clitoris of the female; the two lateral folds, on each side, being transformed into the labia majora, or “outer lips” of the female external genitals.

    Position of the Fetus. During the period of gestation the fetus lies “curled up” in the bag of the amnion. The head is usually relaxed and inclined forward, the chin resting on the breast; the feet are bent up in front of the legs, the legs bent up on the thighs, the knees separated from each other, but the heels almost touching on the back of the thighs; the arms bent forward and the hands placed between them as though to receive the chin between them. The folded-up fetus forms an oval, the longest diameter of which is about eleven inches at its greatest stage of growth. Nature here shows a wonderful ability to pack the fetus into as little space as possible, and in such a position as to protect it from injury, and to discommode the mother as little as possible.

    The following interesting statement made by Helen Idleson, M. D., in a European medical journal several years ago, gives a very clear idea, expressed in popular terms, of the appearance and characteristics of the embryo or fetus in the various stages of its development:

    “The growth of the embryo after fecundation is very rapid. On the tenth day it has the appearance of a semi-transparent grayish flake. On the twelfth day it is nearly the size of a pea, filled with fluid, in the middle of which is an opaque spot, presenting the first appearance of an embryo, which may be clearly seen as an oblong or curved body, and is plainly visible to the naked eye on the fourteenth day. The twenty-first day the embryo resembles an ant or a lettuce seed. Many of its parts now begin to show themselves, especially the cartilaginous beginnings of the spinal column, the heart, etc. The thirtieth day the embryo is as large as a horse-fly, and resembles a worm, bent together. There are as yet no limbs, and the head is larger than the rest of the body. When stretched out it is nearly half an inch long. Toward the fifth week the heart increases greatly in proportion to the remainder of the body, and the rudimentary eyes are indicated by two black spots toward the sides, and the heart exhibits its external form, bearing a close resemblance to that in an adult. In the seventh week, bone begins to form in the lower jaw and clavicle. Narrow streaks on each side of the vertebral column show the beginning of the ribs. The heart is perfecting its form, the brain enlarging, and the eyes and ears growing more perfect, and the limbs sprouting from the body. The lungs are mere sacks, and the trachea is a delicate thread, but the liver is very large. In the seventh week are formed the renal capsules and kidneys.

    “At two months, the forearm and hand can be distinguished, but not the arm; the hand is larger than the forearm, but it is not supplied with fingers. The distinction of sex is yet difficult. The eyes are prominent. The nose forms an obtuse eminence. The nostrils are rounded and separated. The mouth is gaping, and the epidermis can be distinguished from the true skin. The embryo is from one-half to two inches long, the head forming more than one-third of the whole. At the end of three months, the eyelids are distinct but shut; the lips are drawn together; the forehead and nose are clearly traceable, and the organs of generation prominent. The heart beats with force; the larger vessels carry red blood; the fingers and toes are well defined, and the muscles begin to be developed.

    “At the fourth month, the embryo takes the name of ‘fetus.’ The body is six to eight inches in length. The skin has a rosy color, and the muscles produce a sensible motion. A fetus born at this time might live several hours. At five months the length of the body is from eight to ten inches. At six months, the length is twelve and one-half inches. The hair appears on the head, the eyes closed, the eyelids somewhat thicker, and their margins, as well as their eyebrows, are studded with very delicate hairs. At seven months, every part has been increased in volume and perfection; the bony system is nearly complete; length, twelve to fourteen inches. If born at this period, the fetus is able to breathe, cry and nurse, and may live if properly cared for.

    “At eight months, the fetus seems to grow rather in length than in thickness; it is only sixteen to eighteen inches long, and yet weighs from four to five pounds. The skin is very red, and covered with down and a considerable quantity of sebaceous matter. The lower jaw, which at first was very short, is now as long as the upper one. Finally, at term, nine months, the fetus is about nineteen to twenty-three inches long, and weighs from six to eight pounds. The red blood circulates in the capillaries, and the skin performs the functions of perspiration; the nails are fully developed.”

    Another writer says: “There is a superstition that a child born at eight months is not as liable to live as if born at seven months; indeed, many suppose that an eight months’ child never survives. Facts do not prove this idea to be correct. Personally, I have known several eight months’ babies to live and do well, and I believe that their chance of life is much greater than if born at seven months.”

    Children born in the seventh month of gestation are capable of living, though great care is required to rear them for the first few months after birth. The “incubators” now so common in large cities have greatly increased the chances of the “seven months’ child,” and, for that matter, of those born even earlier. There are a number of cases of record where children have been born after six months of gestation, and a few even before the six months, but these cases are rare and unusual, and such children usually die soon after birth.

    The following table, given by a good authority, shows the average length and weight of the human embryo and fetus:

    Age. Length in inches. Weight.
    2 weeks 0.1 Not given
    3 weeks 0.2 3 grains
    4 weeks 0.3 Not given
    5 weeks 0.5 Not given
    6 weeks 0.7 Not given
    7 weeks 0.9 Not given
    8 weeks 1.5 4 drachms
    3 months 3.0 2 ounces
    4 months 6.0 5 ounces
    5 months 9.0 10 ounces
    6 months 12.0 1 pound
    7 months 15.0 3 pounds
    8 months 17.0 5 pounds
    9 months 20.0 6 to 9 pounds

    Professor Clark holds that if at birth the infant weighs less than 5 pounds, it rarely thrives, though the records show that many infants weighing much less than this have lived and thrived. In very rare cases, infants have been known to weigh no more than one pound at birth, and to have still survived and thrived. And, on the other hand, many cases are known where infants were born, and thrived, who weighed more than twice the average weight. So, at the last, it is difficult to lay down hard and fast rules in the case.

    Delivery. At the termination of the period of gestation, the child is born into the world, and, instead of depending upon the blood of the mother for nourishment and oxygen, it begins to ingest its own food, to eliminate its own waste matter through the regular channels of the body, and to use its own lungs for the purpose of obtaining oxygen for its blood and to burn up the waste products in the lungs.

    The process of bringing a child into the world is called “parturition.” The fetus is expelled from the body of the mother by the contraction of the muscles of and around the Uterus, and also by the contraction of the abdominal walls. In the early stages of labor, the uterine muscles are brought into play; but when the fetus enters into the vaginal passage the abdominal muscles manifest their energy. The uterine and abdominal muscular movements are purely involuntary, although the mother may aid in the delivery by voluntary muscular movements. The involuntary muscular movements are due to the reflex action originating, probably, in a part of the spinal cord.

    The uterine contractions are rhythmical, and have been compared to the contraction of the muscles of the heart. Each “labor pain” begins with a minimum of contraction, the activity increasing until a maximum is reached, when it gradually decreases, only to be followed a little later by a new contraction. When the fetus is finally expelled from the Uterus (followed later by the placenta or “afterbirth”) that organ begins a gradual contraction to its normal size, shape, and condition, the restorative process usually lasting over several weeks.

    The Physical Signs of Pregnancy. The physical signs of pregnancy in the case of women of normal health are as follows:

    (1) Cessation of the menses, or menstruation. While it is true that a non-pregnant woman may occasionally pass over a menstrual period, yet as a general rule the complete cessation of a period by a married woman, particularly when the woman has previously been regular in this respect, may be considered a probable indication of pregnancy; and when the second period has been passed the probability merges almost into a certainty. An examination by a competent physician will set all doubts at rest.

    (2) Enlargement of the breasts. This indication usually manifests itself in about six or eight weeks after conception. This enlargement is usually preceded by a sensation of tingling and throbbing. The enlargement is manifested in the form of a rather hard and knotty increase, differing from the ordinary fatty increase; the lobules, arranged regularly around the nipple, are plainly distinguishable beneath the skin by means of the touch of the fingers.

    (3) Darkening of the areolar tissue surrounding the nipple. In the unimpregnated condition this tissue is of a pinkish shade; but after impregnation the shade grows darker and the circle increases in size. However, when the woman bears several children in somewhat rapid succession, this dark color may become permanent and accordingly ceases to be an indication.

    (4) Enlargement of the abdomen. This indication manifests itself about the second month, at which time the Uterus begins to elevate the intestines by rising up from the pelvis. In the fourth month the Uterus has risen so far out of the pelvis that it assumes the form and appearance of a hard round tumor. The entire abdomen then begins to enlarge. The Uterus causes an enlargement in the region of the navel at the sixth month, and the region of the diaphragm at the ninth month.

    (5) Quickening, or “signs of life.” This indication manifests first from the fourth month to the fifth—at about the exact half of the entire period of gestation. At this time, and afterward, the movements of the embryo are plainly discernable to the mother.

    The Disorders of Pregnancy. There are a number of physical disorders usually accompanying pregnancy, some of which are trifling, but some of which require the advice of a competent physician. The best plan is for the woman to consult a physician shortly after she discovers herself to be pregnant, and thereafter to visit him occasionally for advice during the period of gestation. The too common plan of postponing the call upon the physician until the eighth or ninth month is not a wise one, for in many cases the advice of a competent physician at an earlier stage of the pregnancy will obviate serious complications. The call upon the physician should usually be made not later than the third or fourth month, and positively not delayed longer than the fifth month. The physician should make an examination to ascertain whether the child is in the normal position in the Uterus, and should also examine the urine each month to ascertain whether the kidneys are functioning normally.

    What is called “morning sickness” is one of the most common of the disorders of pregnancy. It is marked by nausea or vomiting, or both, early in the morning, usually shortly after arising. Some women have at least faint symptoms of this disorder from the very beginning of conception, but usually it does not manifest until the third, fourth, or fifth week of pregnancy. It usually ceases at the end of the third or fourth month. Except in very severe cases, in which the physician should be consulted, the disorder is not serious, and requires but a little common-sense treatment, and rational habits of living. An authority says: “Eat of some fruit that best agrees with palate or stomach; drink hot water; eat nothing until a real hunger demands food. Where nausea occurs after eating, a tart apple or orange is good.” Another authority says: “Let women suffering from morning sickness try acid fruit—apples, oranges, or even lemons, if their sourness is not unpleasant. If a single orange or apple after each meal does not suffice, let them try two; let them eat ten if that number is necessary to conquer the distress. The principle is a correct one, and the relief certain. Let fruit be eaten at all hours of the day—before meals and after, on going to bed at night and at getting up in the morning. If berries are in season, let them be eaten in the natural state—that is, without sugar. If the sickness still continues, omit a meal now and then, and substitute fruit in its stead. By persistence in this course, not only will nausea be conquered, but an easy confinement guaranteed.”

    The pregnant woman often develops a capricious appetite. This disorder may manifest in one or more of several forms, as for instance: the woman may lose her appetite, and take but little food; or she may develop an abnormally large appetite, and eat much more than is necessary; or she may take a dislike to certain kinds of food—many women have an aversion toward meat during pregnancy; or she may have a “craving” for certain articles of food, sometimes for kinds of food not liked at other times, such as sour pickles, sour cabbage, etc. A little common sense, and the presence of attractive articles of fruits, etc., will do much to relieve these troubles; in extreme cases the physician’s advice will help.

    The pregnant woman should have her teeth put in good order as soon as possible, as troubles with teeth sometimes manifest themselves during pregnancy, and give much trouble and annoyance. Difficulty in urination, constipation, piles, irritation or itching of the genital organs, varicose veins, liver spots, and similar disorders, which are sometimes manifest during pregnancy, in some form or degree, should receive the attention and care of a competent physician.

    The following general advice from a competent authority is worthy of being followed: “If everything is satisfactory, if there is no severe vomiting, kidney trouble, etc., the usual mixed diet may continue. The only changes I would make are the following: Drink plenty of hot water during the entire time of pregnancy: a glass or two in the morning, two or three glasses in the afternoon, the same at night. From six to twelve glasses may be consumed. Also plenty of milk, buttermilk and fermented milk. Plenty of fruit and vegetables. Meat only once a day. For the tendency to constipation, whole wheat bread, rye bread, bread baked of bran, or bran with cream. As to exercise, either extreme must be avoided. Some women think that as soon as they become pregnant, they must not move a muscle; they are to be put in a glass case, and kept there until the date of delivery. Other women, on the other hand, of the ultra-modern type, indulge in strenuous exercise, and go out on long fatiguing walks up to the last day. Either extreme is injurious. The right way is moderate exercise, and short, non-fatiguing walks. Bathing may be kept up to the day of the delivery. But warm baths, particularly during the last two or three months, are preferable to cold baths.”

    Childbirth. The first indication of approaching delivery of the child is that of the descent of the child into the pelvis of the mother, from its former position up near the diaphragm. When this occurs, the mother usually experiences a feeling of relief, and a greater ease in breathing because of the relaxation of the former pressure on the diaphragm. Sometimes this occurs several days preceding delivery, while in other cases it occurs only a few hours before delivery. There usually occurs about the same time a slight discharge of mucus tinged with blood. The latter is called “the show,” and is caused by the unsealing of the mouth of the womb, and indicates that the Uterus is preparing to discharge its contents.

    Labor, in childbirth, consists of three stages. In the first stage, the Uterus alone contracts, and the mouth of the womb dilates; in the second stage, the abdominal muscles assist the Uterus in expelling the child; in the third stage, the Placenta (afterbirth) and membranes are expelled.

    After the delivery of the child, and after the pulsation in the umbillical cord has ceased (usually from ten to thirty minutes after delivery), the umbillical cord is severed and tied by the physician. In natural labor, the expulsion of the afterbirth occurs from within a few minutes to an hour after the delivery of the child. Nature is sometimes slow in expelling the afterbirth, but caution should be exercised in the matter of using force to assist Nature in this matter, for injury to the Uterus has often resulted from malpractice in such a case. The afterbirth is not firmly attached to the womb, but is like the peel of an orange which Nature sloughs off in due time.

    PRIVATE Sex Advice to Women By R. B. Armitage, M. D.

    For Young Wives and those who Expect to be Married.

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