APPENDIX 



A FKW 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 : Darwinism. 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: Da; win 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 : Essa\s 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 modifica- 

 tions. 



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. 



Lectures on the Theory of Descent, translated by J. Arthur Thompson. 1 



1 This translation is expected to appear during the year 1904. The title of the 

 translation has not been determined, but Professor Weismann writes it will probably 

 be as stated. 



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