I. 



THE SURVIVAL OF THE UNLIKE/ 



We all agree that there has been and is evolution ; but 

 we probably all disagree as to the exact agencies and 

 forces which have been and are responsible for it. The 

 subject of the agencies and vehicles of evolution has been 

 gone over repeatedly and carefully for the animal crea- 

 tion, but there is comparatively little similar research 

 and speculation for the plant creation. This deficiency 

 upon the plant side is my excuse for calling your atten- 

 tion, in a popular way, to a few suggestions respecting 

 the continuing creation of the vegetable world, and to a 

 somewhat discursive consideration of a number of illus- 

 trations of the methods of advance of plant types. 



I. 



Nature of the Divergence of the Plant 

 and the Animal. 



It is self-evident that the development of life upon our 

 planet has taken place along two divergent lines. These 

 lines evidently originated at a common point. The 

 common life -plasma was probably at first more ani- 



• Originally an address before the Philosophical Club of Cornell University, 

 April 20, 1896. Revised and presented, in part, before the American Philosophical 

 Society, Philadelphia, May 1, 1896, and printed in the proceedings of the Society, 

 vol. XXXV. pp. 88 to 110. 



