112 THE SURVIVAL OF THE UNLIKE. [iV. 



the hand of man ; and this rule I wish now to apply to a 

 very few familiar plants. In doing so, I do not wish to 

 be understood as saying that I consider it advisable 

 to describe these plants as species under the existing 

 methods of botanical description and nomenclature, for, 

 merely as a matter of convenience and perspicuity, I do 

 not; but I wish to show that they really are, in every 

 essential character, just as much species as very many 

 other universally accepted species are. 



The Forms of Tomatoes. 

 The evolution of forms which any botanist would at 



A. Spray of old-time tomato. 



once designate as species, were he ignorant of their 

 origin, is well illustrated in the tomato. Dunal, the 



