Charles Darwin and the Origin of species; addresses, etc., in America and England in the year of the two anniversaries Q Science
Laboratory directions in general biology prepared to accompany text book on General biology Q Science
New fresh water shells of the United States : with coloured illustrations, and a monograph of the genus Anculotus of Say : also a synopsis of the American Naiades Q Science
The doctrine of evolution; its data, its principles, its speculations, and its theistic bearings Q Science
The theory of general relativity and gravitation; based on a course of lectures delivered at the Conference on recent advances in physics held at the University of Toronto, in January, 1921 Q Science
