The Physical Basis of SocietyD.Appleton, 1928 - 526 من الصفحات |
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الصفحة xvii
... Marriage Rates Marriage in the United States Differential Birth Rates Family Degeneration Causes of the Declining Birth Rate Migrations Celibacy Childlessness Abortion Contraception Problems of Social Control Prohibition 417 419 419 420 ...
... Marriage Rates Marriage in the United States Differential Birth Rates Family Degeneration Causes of the Declining Birth Rate Migrations Celibacy Childlessness Abortion Contraception Problems of Social Control Prohibition 417 419 419 420 ...
الصفحة xxi
... 328 24. The inheritance of feeble - mindedness 333 25. The inheritance of feeble - mindedness 26. Contrast in children of two marriages 334 335 FIGURE PAGE 27. Neurotic inheritance 336 28. Examples of the xxi CHAPTER Tuberculosis.
... 328 24. The inheritance of feeble - mindedness 333 25. The inheritance of feeble - mindedness 26. Contrast in children of two marriages 334 335 FIGURE PAGE 27. Neurotic inheritance 336 28. Examples of the xxi CHAPTER Tuberculosis.
الصفحة 264
... married men must have 1,350 sons to maintain the number of men . Thus each thousand families must have 2,618 children ( 2.6 per family ) to replace the original num- ber . But , at present , one marriage out of six is childless , hence ...
... married men must have 1,350 sons to maintain the number of men . Thus each thousand families must have 2,618 children ( 2.6 per family ) to replace the original num- ber . But , at present , one marriage out of six is childless , hence ...
الصفحة 324
... a rule . Fourteen hundred Danish children were examined by Winge with the following results : INHERITANCE OF EYE COLOR 2 NUMBER OF CHILDREN MARRIAGES Blue 324 THE PHYSICAL BASIS OF SOCIETY Inheritance of Physical Qualities.
... a rule . Fourteen hundred Danish children were examined by Winge with the following results : INHERITANCE OF EYE COLOR 2 NUMBER OF CHILDREN MARRIAGES Blue 324 THE PHYSICAL BASIS OF SOCIETY Inheritance of Physical Qualities.
الصفحة 325
... married to a normal woman , are normal , but if the girls of this generation marry , half of their sons will be color blind . A color - blind woman is found only when a color - blind man marries a woman whose father was color blind . If ...
... married to a normal woman , are normal , but if the girls of this generation marry , half of their sons will be color blind . A color - blind woman is found only when a color - blind man marries a woman whose father was color blind . If ...
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