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resorted to by the ignorant, has in reality no signifi- 

 cance to the mind of the philosophic naturalist. There 

 is evidently one structural plan running throughout 

 the whole of vitality, and [after which its myriad 

 members have been ascensively developed, just as 

 there is one great material plan pervading the 

 planetary system ; and science merely seeks to unfold 

 that plan, and to determine the principles upon which 

 it is constructed. If there be no genetic connection 

 between man and the order that stands next beneath 

 him, there is at all events a marvellous similarity in 

 structural organisation, and this similarity is surely 

 suggestive of something more intimate than mere 

 coincidence. Call it development, or call it what you 

 wUl, it is clearly the same structural idea pervading 

 the Creative Mind, and receiving, according to a pre- 

 determined plan of progression, certain additions in 

 time which mark its onward and upward expansion. 

 No ignorant jibing can deter from research into this 

 wonderful unity of plan, no bigoted calumnies will 

 prevent the expression of opinions which find their 

 verification in the facts of nature. We do not ad- 

 vocate the development hypothesis from hostility to 

 other beliefs or theories, for every honest effort to 

 throw light on the history of our race should meet 

 with respectful consideration ; nor do we contend that 

 it has yet established its claims to belief; but we are 



