“This is precisely the aim of eugenics. Its first object is to check the birth-rate of the Unfit, instead of allowing them to come into being, though doomed in large numbers to perish prematurely. The second object is the improvement of the race by furthering the productivity of the Fit by early marriages and healthful rearing of their children. Natural Selection rests upon excessive production and wholesale destruction; Eugenics on bringing no more individuals into the world than can be properly cared for, and those only of the best stock.”
Heredity and Selection in Sociology. (1907.) By George Chatterton-Hill.
This is a useful and interesting work, the nature of which is well indicated by its title. It contains many purely eugenic chapters, and cannot be ignored by the student.
The Germ-plasm, A Theory of Heredity. (The Contemporary Science Series. 1893.) By August Weismann.
This is Weismann's great work. It should be studied by politicians and others who still interpret all social phenomena in terms of Lamarckian theory, and also by modern writers who are so much more Weismannian than Weismann.
The Evolution Theory. (1904.) Translated by J. Arthur Thomson and M. R. Thomson. By August Weismann.
The Principles of Heredity. (1905.) By G. Archdall Reid.
This is a very interesting and extremely Weismannian book which contains the most recent statement of the author's remarkable enquiries into the influence of disease as a factor of human selection.
Variation in Animals and Plants. (The International Scientific Series. 1903.) By H. M. Vernon.
Variation, Heredity and Evolution. (1906.) By R. H. Lock.