62 STATE NORMAL SCHOOL, 



2. Factors of Organic Evolution: H. Spencer, Pop. Sci. 

 Mon., vol. XXIX, pp. 54-63, and 192-203. 



3. Factors of Organic Evolution: H. Spencer, Pop. Sci. 

 Mon., vol. XXVIII, pp. 754-779. 



4. The Elements of Organic Evolution: Jordan, Footnotes 

 to Evolution, chap. 3, pp. 75-99. 



5. External and Internal Factors in Evolution: Morgan, 

 Evolution and Adaptation, chap. 9, pp. 300-339. 



6. The Influence of Environment on the Forms of Plants: 

 Klebs, Darwin and Modern Science, chap. 13, pp. 223- 

 246. 



7. Experimental Study of the Influence of Environment on 

 Animals: Loeb, Darwin and Modern Science, chap. 14, 

 pp. 247-270. 



8. Mental Factors in Evolution: Morgan, Darwin and Mod- 

 ern Science, chap. 21, pp. 424-445. 



9. The Theory of Organic Evolution: Metcalf, Organic 

 Evolution, Part I, pp. 3-83. 



IX. SELECTION— NATURAL, ORGANIC, SEXUAL, ETC.: 



1. Theory of Sexual Selection: Romanes, Darwin and Af- 

 ter Darwin, chap. 10, pp. 379-420. 



2. Significance of Sexual Reproduction in Theory of Nat- 

 ural Selection: Wsismann, On Heredity, vol. I, chaps. 

 5 and 6, pp. 257-342; Translated by Poulton and Shipley. 



3. Theories of Evolution Alternative to Selection: Kellogg, 

 Darwinism To-day, chaps. 9-10-11, pp. 232-253, 262-290 

 and 327-356. 



4. Theory of Natural Selection: G. W. Bulman, Westmin- 

 ster Rev,, vol. CL, pp. GS8-696. 



5. Inadequacy of Natural Selection: H. Spencer, Pop. Sci. 

 Hon., vol. XLII, pp. 799-812. 



6. Organic Selection: J. Mark Baldwin, Science, vol. V, 

 pp. 634-636. 



