6 EVOLUTIONS OF ORGANIZATION. 



own appointed place and harmonies, while the 

 central tower ascends to its pre-ordained comple- 

 tion, an evolution like that of-a plant from whose 

 root-leaves the shoot ascends with leaves that 

 change their character according to law, till the 

 summit is reached, where definite groups converge, 

 assorted to complete the flower. 



And just as there are diverse notions as to the 

 character of the evolutions of life on the globe, so 

 there is difference of opinion as to the source from 

 which it springs. There are some who still deny 

 the genetic connection of different forms of life, 

 and others who either consider genetic connection 

 proved, or look on it as a hypothesis with more or 

 less probability in its favour ; and among these 

 latter there are some who see no morphological 

 facts which cannot be explained by reference to 

 genetic relationship and its involved lines of 

 heredity; while there are others like myself who, 

 in heredity, can only recognize a phenomenon the 

 origin of which demands an explanation. 



It is a very remarkable circumstance that while 

 all these views are held and have been known to 

 the scientific world for a great length of time, the 

 name of Evolutionists has, with curious oblivious- 

 ness, been assumed as a distinctive title by those 

 who believe that the evolution is merely indefinite 



