Conclusion 75 



very different from each other. With increasing dif- 

 ferentiation they must themselves have become more 

 complicated, and gradually more unlike each other. 



But the farther we get away from the facts the more 

 likely we are to get lost in false speculations. My object 

 was only to place the fundamental idea of Darwin's pan- 

 genesis in the right light. I hope I have succeeded in 

 this. 



