[52] Johnson, Roswell H., "The Malthusian Principle and Natural
Selection," _American Naturalist_, XLVI (1912), pp. 372-376.
[53] Karl Pearson, _The Groundwork of Eugenics_, p. 25, London, 1912.
[54] "Let _p_ be the chance of death from a random, not a constitutional
source, then 1-_p_ is the chance of a selective death in a parent and
1-_p_ again of a selective death in the case of an offspring, then
(1-_p_)^2 must equal about 1/3, = .36, more exactly 'therefore' 1-_p_ =
.6 and _p_ = .40. In other words, 60% of the deaths _are selective_."
[55] _Archiv f. Rassen-u. Gesellschafts Biologie_, VI (1909), pp. 33-43.
[56] Snow, E. C., _On the Intensity of Natural Selection in Man_,
London, 1911.
[57] _Biometrika_, Vol. X, pp. 488-506, London, May, 1915.
[58] Pearson, Karl, _Tuberculosis, Heredity and Environment_, London,
1912. Among the most careful contributions to the problem of
tuberculosis are those of Charles Goring (_On the Inheritance of the
Diathesis of Phthisis and Insanity_, London, 1910), Ernest G. Pope (_A
Second Study of the Statistics of Pulmonary Tuberculosis_, London, Dulau
& Co.), and W. P. Elderton and S. J. Perry (_A Third Study of the
Statistics of Pulmonary Tuberculosis.
Pages:
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727