PLAN IN THE ANIMAL KINGDOM. 389 



as shown in the development of the animal 

 kingdom. I wish I could send it to you, for I 

 think it might please you. Unhappily, I had 

 no time to write it out, and have not even 

 an outline of it. But I intend to work fur- 

 ther upon this subject and make a book upon 

 it one of these days. If I speak of it to-day 

 it is because in this course I have treated aU 

 the questions upon which you ask my opinion. 

 Let me answer them here after a somewhat 

 aphoristic fashion. 



I find it impossible to attribute the biolog- 

 ical phenomena, which have been and still are 

 going on upon the surface of our globe, to the 

 simple action of physical forces. I believe 

 they are due, in their entirety, as well as in- 

 dividually, to the direct intervention of a crea- 

 tive power, acting freely and in an autonomic 

 way. ... I have tried to make this intentional 

 plan in the organization of the animal king- 

 dom evident, by showing that the differences 

 between animals do not constitute a material 

 chain, analogous to a series of physical phe- 

 nomena, bound together by the same law, but 

 present themselves rather as the phases of a 

 thought, formulated according to a definite 

 aim. I think we know enough of compara- 

 tive anatomy to abandon forever the idea of 



