1 68 PIONEERS OF EVOLUTION. 



work on Hereditary Genius, of which his own family 

 is so remarkable an instance. Tyndall and Lewes 

 had long since signified their warm adhesion. At 

 Oxford, Rolleston was bringing up a fresh genera- 

 tion of young biologists in the new faith; at Cam- 

 bridge, Darwin's old university, a whole school of 

 brilliant and accurate physiologists was beginning to 

 make itself both felt and heard. In the domain of 

 anthropology, Tylor was welcoming the assistance of 

 the new ideas, while Lubbock was engaged on his 

 kindred investigations into the Origin of Civilization 

 and the Primitive Condition of Man. All these 

 diverse lines of thought both showed the widespread 

 influence of Darwin's first great work, and led up 

 to the preparation of his second, in which he dealt 

 with the history and development of the human race. 

 And what was thus true of England was equally 

 true of the civilized world, regarded as a whole: 

 everywhere the great evolutionary movement was 

 well in progress, everywhere the impulse sent forth 

 from the quiet Kentish home was permeating and 

 quickening the entire pulse of intelligent humanity." 

 The Origin of Species, as we have seen, was in- 

 tended as a rough draft or preliminary outline of 

 the theory of natural selection. The materials which 

 Darwin had collected in support of that theory being 

 enormous, the several books which followed between 

 1859 and 1881, the year before his death, were ex- 

 pansions of hints and parts of the pioneer book. 

 The last to appear was that treating of The Forma- 



