Identifier: bookofnaturecont00asht (find matches)
Title: The book of nature : containing information for young people who think of getting married : on the philosophy of procreation and sexual intercourse, showing how to prevent conception and to avoid child-bearing : also, rules for management during labor and child-birth
Year: 1861 (1860s)
Authors: Ashton, James History of Medicine Collections (Duke University) NcD
Subjects: Contraception Sex Manuals
Publisher: New York : Wallis & Ashton
Contributing Library: Duke University Libraries
Digitizing Sponsor: Duke University Libraries

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r extremities are like a tail. At twomonths the legs and feet appear, the toes being united simi-lar to frogs1 feet. During the tenth week the eyes showtheir lids, the mouth becomes more prominent, and theears may be seen. The heart is now fully developed, butas yet contains no blood. The brain shows its form andsubstance. The next change brings red blood to the largerveins and to the heart, and at the end of three months theshape and form of the future being is nearly perfect, weigh-ing less than three ounces. The next process of Kature isthe thickening of the skin, and so rapid now is the growththat within one month the Foetus fully doubles in weight.During the fourth month the bones begin to ossify, theuterus rises in the abdomen, and we are then enabled todetermine the sex. This change is what is usually calledquickening, and it corresponds with the time of breakingthe shell in birds. At the end of the fifth month the fin-ger-nails appear, and fine silky hair begins to grow on the
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POSITION OF fHE CIIM.D AT NINE MONTHS. FOETAL FOOD DURING GESTATION. S3 head. At seven months the being is generally perfect, thebones are firm and hard, and it weighs about three pounds.The intellectual faculties are not developed, however. Theeighth and ninth months merely increase the size andstrength of the child. Our Engravings show the relative sizes and position of aFoetus, as it lies in the Womb, at three several stages ofgestation. They are original drawings from anatomicalfigures in wax in the New York Anatomical Museum. The child, previous to birth, never takes nutriment inby its mouth, for that is always firmly closed until afterbirth. Its food during gestation is probably derived fromthe blood of its mother through the umbilical cord, ornavel-string, which likewise supplies its veins and arteriesuntil the very hour of birth. An artery and two veinspass through this cord. There is sometimes an impedi-ment in the circulation of new-born infants, which is call-ed the blue di

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