Heredity and eugenics ; a course of lectures summarizing recent advances in knowledge in variation, heredity, and evolution and its relation to plant, animal and human improvement and welfare / by William Ernest Castle, John Merle Coulter, Charles Benedict Davenport, Edward Murray East, William Lawrence Tower.

Date:
[1912]
Catalogue details

Licence: Public Domain Mark

Credit: Heredity and eugenics ; a course of lectures summarizing recent advances in knowledge in variation, heredity, and evolution and its relation to plant, animal and human improvement and welfare / by William Ernest Castle, John Merle Coulter, Charles Benedict Davenport, Edward Murray East, William Lawrence Tower. Source: Wellcome Collection.

Provider: This material has been provided by the Francis A. Countway Library of Medicine, through the Medical Heritage Library. The original may be consulted at the Francis A. Countway Library of Medicine, Harvard Medical School.

    295/332 (page 283)
    occur in fraternities with feeble-mindedness, or have feeble- minded parents (Fig. 94). The test of the mental condition rr//^/f ^^ un/rnotv/! 5^ of relatives is one that may well be applied by judges in deciding upon the responsibility of an aggressor. It is to be hoped that the conservatism of the law upon this matter may be speedily overcome. Not only the condition of imper- fect mental development, but also that of inability to withstand stress upon the nervous system, may be inherited. From the studies of Dr. Rosanoff and his collaborators, it ap- pears that if both parents be subject to manic depressive insanity or to dementia precox, all children will be neuropathic also (Fig. 95); that if one parent be affected and come from a weak strain, half n-6o?)TnTO anenceph. Fig. 93.—-The pedigree of a family in whose second generation incest produces an epileptic daughter, but by whose own father she has one epileptic and two feeble-minded children; A, alcohoHc; C, criminalistic; E, epileptic; F, feeble- minded; Sx, licentious. (3) ^ [i] (FffSi (£)Tn i-o 6-n iiO ijO n (3) 6 d^d dAd 6-n ^(^^SWff^^oS tu b A? Snoot ^^hh^ b^-n^ ^^b Fig. 94.—Pedigree of a feeble-minded family in which criminalistic (C) and licentious (Sx) traits also appear.