86 ORGANIC EVOLUTION CONSIDERED 



this can result in the formation of new species in a 

 state of nature. Whatever might be the acquired 

 characters of individuals, they would be lost by min- 

 gling, and the difficulties which I have presented of 

 evolving new species remain in full force. 



Biologists in the above instance, as well as in oth- 

 ers, differ in theory as to fundamental principles of 

 evolution. 



He who imagines that the theory of organic evolu- 

 tion has been proved to the point of demonstration, 

 has but to read the contentions of evolutionists them- 

 selves with regard to the most important things in- 

 volved in the theory, in order to satisfy his mind that 

 there is great diversity of opinion. 



