Part I: 1. Memoir
Part II. Scientific Papers: 2. Hybridisation and crossbreeding
3. Problems of heredity
4. An address on Mendelian heredity
5. Gamete and zygote
6. Heredity and variation in modern lights
7. Presidential address to the zoological section, British Association, 1904
8. Presidential address to the agricultural subsection, British Association, 1911
9. Presidential address to the British Association, Australia, 1914
10. The methods and scope of genetics
11. Biological fact and the structure of society
12. Science and nationality
13. Common-sense in racial problems
14. Evolutionary faith and modern doubts
15. Progress in biology
Part III. Educational Essays: 16. Address to the Salt Schools, Shipley, 1915
17. Evolution and education
18. The place of science in education
19. Classical and modern education
20. Classical education and science men
Part IV. Reviews: 21. Evolution for amateurs
23. Heredity in the physiology of nations
24. Huxley and evolution
Appendix.
