RACE. 



distinct species is thus a matter of opinion, 

 and authorities occasionally disagree in their 

 classification. 



But in questions of evolution, it is of 

 cardinal importance to determine whether a 

 variety is merely an unusually wide diverg- 

 ence in expression of type, or a distinct 

 type, or, as Darwin holds, a new species in 

 the course of formation. 



We must therefore seek to find some 

 characteristic or test, that shall determine 

 whether two closely allied groups are dis- 

 tinct races, or merely varieties of the same 

 race, that may, with opportunity or altered 

 conditions of existence, merge into one. 



The test we propose of a distinct type or 

 race is, that its members shall not only be 

 alike in appearance and fertile among them- 

 selves, but that their progeny shall continue 

 fertile and the type persistent. 



If the members of a variety (so called) are 

 fertile together and their stock persistent, it 

 is a distinct type or race. But if the mem- 

 bers of a variety, although fertile among them- 

 selves, cannot maintain their type for at least 

 three generations, it is an intermediary be- 

 tween two races, and not a distinct type or 

 race. 



We believe that unless at least one parent 



