Where diet Life Begin? 49 



rule, favorable to all, it follows that the general 

 movement of all the organic life of the earth 

 is, and ever has been, from the warmer toward 

 the colder, or from the colder toward the 

 warmer, and this too from one extreme to 

 the other, and to my mind the movement from 

 the colder toward the warmer, from the north 

 to the south in our hemisphere, seems not only 

 entirely reasonable, but the facts sustaining 

 It positive, and the conclusion inevitable. 



It is a well-recognized fact and worthy of 

 notice in this connection, that all plants and 

 animals moved by man a few degrees from 

 the north to the south in our hemisphere are 

 improved and become more highly developed, 

 vigorous and prolific by reason of the transfer, 

 while a like movement in the opposite di- 

 rection produces, in a degree proportioned to 

 the distance moved, all the contrary effects 

 of sterility and degeneration ; so that this 

 southern movement, in addition to all its other 

 probabilities, is consonant with, and in the 

 direct line of, the highest development and 

 evolution of both plants and animals. 



In the light of this fact let us ask what 

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