APPENDIX II 



A FEW BOOKS WHICH TREAT OF ORGANIC EVOLUTION 

 AND PHENOMENA OF SPECIAL ADAPTATION 



DARWIN : The Origin of Species. Presents the theory of natural selection 

 with a wealth of description of phenomena bearing upon it. 



The Descent of Man. Treats especially sexual selection. 



WALLACE: Darwini m. Gives, on the whole, the best statement of 

 natural selection; treats variation well; is interesting in its criticism of sexual 

 selection; suggests the use of colors for signals and recognition marks; does 

 not adequately treat segregation; claims that natural selection is insufficient 

 to account for the evolution of the human mind. 



Island Life. Gives a good statement of the phenomena of geographical 

 distribution in their bearing upon evolution. 



ROMANES: Darwin and After Darwin, three volumes. Vol. I, Natural 

 and Sexual Selection and the natural phenomena which bear upon them; 

 very clearly stated, many good illustrations. Vol. II, Heredity and Utility: 

 in part a discussion of the inheritance of parental modifications. Vol. Ill, 

 Isolation and Physiological Selection: the best statement of the influence 

 of segregation upon evolution. 



WEISMANN : Essays upon Heredity and Kindred Biological Problems. A 

 very valuable and stimulating book in which is developed the theory of the 

 continuity of the germ plasm and the non-inheritance of parental modifications. 



The Germ Plasm. A fuller statement of Professor Weismann's theory 

 of the continuity of the germ plasm : somewhat intricate. 



Germinal Selection. Supplementary to The Germ Plasm. 



The Evolution Theory. Translated by J. Arthur Thompson. A sum- 

 mary of Professor Weismann's contributions to the theory of evolution, written 

 for general readers as well as special students. 



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