“The Descent of Man,” by Charles Darwin. (J. Murray.)
“Hereditary Genius,” by Sir Francis Galton.
“Heredity,” by Prof. A. Thomson. (J. Murray.)
“English Sanitary Institutions,” chap. viii., “The Growth of Humanity in British Politics.” Sir J. Simon. (Cassell & Co.)
Les Pouvoirs en Matière d’Hygiène—Part i. L’Hygiène dans les Législations de l’Antiquité. Alfred Filassier. (Paris: Jules Rousset.)