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resembles, as we have seen, a newt or effc. The 

 reason of the newt- stage is evident if we assume that 

 the frog-stage was attained through a newt-stage. 

 Abbreviate the tail of the newt, elongate its hind 

 legs, and with a few other modifications, we find the 

 higher frog to be represented. For the frog, let it be 

 remembered, is the highest type of its class ; and the 

 evolutionist's contention is that it has ascended to 

 that place and dignity by successively rising from 

 fish to newt, and from newt to frog. The reasons 

 for the "metamorphosis" of the frog are clear 

 enough, on the principle that development repeats 

 descent not always clearly, it is true, and with much 

 modification, but still plainly enough to reveal the 

 ways of the " becoming " of the animal world. 



If it is asked, Why do not all animals show their 

 descent as clearly as does the frog ? I reply, because 

 their development has been modified. But it is none 

 the less true that in the development of all animals 

 we see glimpses of the lines of their genealogy. The 

 great difference between a frog's development (or 

 that of an insect or crustacean which also undergoes 

 " metamorphosis ") and that of, say, a fish which 

 hatches directly from the egg, consists simply in the 

 fact that the frog's development is mostly passed 

 outside the egg, whilst the fish developes within 

 the egg. 



But it is interesting to note that the frog in itself 

 thus serves to link together groups of its own class. 

 Thus its own development not to speak of that of 



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