106 EVOLUTION AND MAX S PLACE IX XATURE 



gerin life, when somatic results only were under con 

 sideration. The histologist cannot work indepen 

 dently of the psychologist, any more than of the 

 naturalist. We cannot interpret the early stages of 

 life, without reference to its advanced stages. In 

 dealing with the question of origin, we must make 

 account of what has been originated. In the attempt 

 to do this in the case of man, a great additional per 

 plexity is imposed upon biological science. What the 

 microscopic nucleus provides for in respect of the 

 physical life is so marvellously beyond possible re 

 presentation on our part, that it is impossible, without 

 serious perplexity for biological science, to state even 

 in outline the vast additional work to be assigned to 

 the nucleus, if it is held to contain provision for all 

 the mental faculties. The complexity involved in 

 the hypothesis of pangenesis, 1 great as tha c , is, is 

 simplicity itself, in comparison with the complexity 

 we have here. Darwin at least concentrated on the 

 germ-cell, and considered how it may contain the 

 germ of the mature structure, thinking mainly of that. 

 But after including all that belongs to bodily structure 

 and function, we threaten to transcend all available 

 powers of scientific investigation, when we propose to 

 seek, besides, in a microscopic nucleus, the origin of 

 all the powers of rational life. This hypothesis 

 makes vast demands on faith, which must reckon 

 heavily against its acceptance. 



All questions as to evolution of intelligence in 

 course of the natural history of life on the earth, must 

 be reserved for a later stage in this inquiry. For the 

 present, we deal exclusively with the laws of heredity, 



i P. 95. 



