"Like leaves on trees the race of man is found,
Now green in youth, now withering on the ground;
Another race the following spring supplies
They fall successive and successive rise."
If it be true that the whole human race gets a fresh start at least thrice every hundred years; that the kind of race in existence in any period depends on the quality of the children born and the influences to which they are exposed after birth; that the supreme reason for marriage is parenthood; that the quality of children born depends (1) on the elements inherent in the germ-cells of the parents, and (2) on the environment of those germ-cells before their union and also after their fusion to form a new being; that a critical study of the relatives of a prospective parent will give valuable evidence regarding the nature of the elements-good, bad and indifferent—inherent in
BARKER LF. THE IMPORTANCE OF THE EUGENIC MOVEMENT AND ITS RELATION TO SOCIAL HYGIENE. JAMA. 1910;LIV(25):2017–2022. doi:10.1001/jama.1910.02550510007002
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