526 children per female. The 330 women having
children have an average fecundity of 4.306 as compared with that of
4.025, based on 120 reproducing women in the Nam family."--Estabrook, A.
H., _The Jukes in 1915_, p. 51, Washington, Carnegie Institution, 1916.
[71] Woods, Frederick Adams, _Heredity in Royalty_, New York, 1906.
[72] Beeton, Miss M., Yule, G.U., and Pearson, Karl, _On the Correlation
between Duration of Life and the Number of Offspring_, Proc. R. S.
London, 67 (1900), pp. 159-171. The material consisted of English and
American Quaker families. Dr. Bell's work is based on old American
families, and has not yet been published.
[73] The entire field of race betterment and social improvement is
divided between _eugenics_, which considers only germinal or heritable
changes in the race; and _euthenics_, which deals with improvement in
the individual, and in his environment. Of course, no sharp line can be
drawn between the two spheres, each one having many indirect effects on
the other. It is important to note, however, that any change in the
individual during his prenatal life is euthenic, not eugenic. Therefore,
contrary to the popular idea of the case, the "Better Babies" movement,
the agitation for proper care of expectant mothers, and the like, are
not _directly_ a part of eugenics.
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