no Species; or, Darzvinism. 



define evolution any way he likes. But *it is not 

 well to give the name of your definition or the 

 name of your description to nature herself and her 

 processes, if the facts do not answer the name. 

 That would be the fallacy of assigning the wrong 

 cause or no cause, instead of the right one, non- 

 causa pro causa. But enough of logical fallacies for 

 the present. 



122. If any one should like to see the working of 



a true cause and its true effects, let him take that 



idea of species (N0.108) which we have 



Deduction :— , , , ' , , 



1. Uninter- reported as truly drawn from the facts by 

 rupted a process of strict induction ; and, revers- 



ing the process to one of deduction, let 

 him look out upon the order of nature, and see the 

 organic world resulting as in exact accordance with 

 that idea of species. He will observe three philo- 

 sophical corollaries proceeding therefrom, and going 

 far towards accounting for all the unities and varie- 

 ties discernible in organic nature, as well as for 

 many of the errors discernible in natural science. 

 In the first place, he will see that descent by gen- 

 eration implies fertility in the parents, as well as an 

 essential similarity between them. It also implies 

 similarity between the parents and the offspring, 

 simile generat simile, " Like begetteth like." So the 

 offspring will be fertile among themselves; since 

 that is included in the essential likeness to their 

 fertile parents. Thus then descent implies con- 

 tinued fertility ; and fertility secures continued 



