1 90 APPENDIX 



A summary of Professor Weismann's contributions to the theory of evolution, 

 written for general readers as well as special students. 



HUXLEY : Man's Place in Nature. Giving comparisons between man 

 and the apes. 



Many of Huxley's essays deal with the theory of evolution, especially 

 those collected in the two volumes Damnniana and Evolution ami 

 Ethics. 



LLOYD MORGAN : Animal Life and Intelligence and Animal Behaviour. 

 Morgan is a very discriminating thinker in problems of heredity and evolution 

 and his writings are very helpful as well as very readable. 



LUBBOCK. : The Origin of Civilization, also a second volume, supplement- 

 ary to this, entitled Prehistoric Times. Very interesting volumes, but by 

 many regarded as unsound. 



WESTERMARCK : The History of Hitman Marriage. Largely a reply to 

 Lubbock's Origin of Civilization. 



T. H. MORGAN : Evolution and Adaptation. Contains an interesting 

 criticism of the theory of sexual selection ; gives a good statement of the 

 theory of mutation ; and attempts to minimize the importance of natural 

 selection by advocating the belief that evolution may occur through mutation 

 unaided by natural selection. 



There are many books upon the theory of evolution, but those men- 

 tioned are perhaps as important as any for one who is not familiar with the 

 subject. The author knows of no satisfactory presentation of evolution from 

 the standpoint of those who believe in the inheritance of parental modifica- 

 tions. COPE'S Origin of the Fittest is one of the most important books written 

 from this standpoint, but it is very difficult reading, almost unintelligible in 

 parts. LE CONTE'S Evolution and its Relation to Religious Thought is written 

 from this point of view, but it is uncritical, assuming rather than discussing 

 the inheritance of parental modifications. 



There are also many books dealing with the phenomena of adaptation 

 which have such an intimate relation to the theory of evolution. COULTER'S 

 Plant Life and JORDAN and KELLOGG'S Animal Life are written from the point 

 of view of evolution, and are not only valuable for the information they 

 convey, but are very readable and entertaining. KERNER'S Natural History 

 of Plants, translated by Oliver, is a great storehouse of information as to 

 special adaptations seen in plants. It is an expensive, four-volume work, but 

 should be found in all libraries. POULTON'S The Colors of Animals gives the 

 best treatment of this interesting subject. GRANT ALLEN'S The Colours of 

 Flowers suggests very interesting conceptions as to the evolution of the colors 



