INDEX 



349 



Absolute, 138 ; Psychology dis 

 tinct from Biology, 268. 



Spermatozoon, 89. 



Spinoza s protest against taking 

 man as independent of Nature, 8, 



Spontaneous generation, unknown 

 to science, 3, 27. 



Stephen, Leslie, holds that animals 

 form general concepts, 252. 



Stone Age, 12. 



Struggle for existence, a law of 

 advance, 6 ; its prominence in 

 Nature, 18 ; its limitations in 

 human life, 71 ; various meanings 

 of, 82. 



Structure, as providing for func 

 tion, 33. 



Supernatural, acknowledgment of, 

 320. 



Survival of the fittest, 5, 73. 



TERMINOLOGY, Huxley s plea for a 

 materialistic, 40. 



Turner, Sir W. , on the Cell Theory, 

 31 ; reproductive cells, how in 

 fluenced, 77 ; on relation of germ- 

 cell to the fully developed organ 

 ism, 88 ; on heredity, 91, 95. 



Tylor, belief in a future state 

 common, 263 ; belief in spiritual 

 beings, 334. 



Tyndall, view of human actions, 



142 ; knowledge that others are 

 rational, 142, 281. 



UNITY of system in structure of 



all organism, 45. 

 Unknown, the, in Nature, 77. 



VARIATION, organic, not always for 

 advance, 5 ; artificial, in contrast 

 with natural, 8. 



Vocalisation, as a test of Intelli 

 gence, 140. 



WALLACE, RUSSEL, on Darwin s 

 success, 1 ; joint-discoverer with 

 Darwin, 18; on overwhelming 

 importance of natural selection, 

 21 ; marvels of animal develop 

 ment, 74 ; on development of 

 germ-cell, 87 ; summary of Dar 

 win s argument as to Intelligence, 

 145 ; evolution insufficient to 

 account for rational life, 147 ; on 

 human intelligence, 257 ; on the 

 higher faculties, 257. 



Weismann, on fertilisation, 78 ; 

 transmission of structural details, 

 78 ; an adequate theory difficult 

 to attain, 79 ; on heredity, 97 ; 

 value of his work, 99 ; mingling 

 of two hereditary tendencies, 101. 



Wundt, Contribution to Experi 

 mental Psychology, 131. 



Printed by T. and A. CONSTABLE, Printers to Her Majesty, 

 at the Edinburgh University Press, 



