STATIONARY FORMS. 405 



prepares the blood, another part pumps the blood to 

 and fro, another part reproduces the species, another 

 part nourishes the young, while over all presides the 

 Brain. 



But how is it that some animals have progressed 

 while others have remained at the bottom of the scale, 

 and others again have advanced only to a certain 

 point ? * If all have grown out of such specks of ani- 

 mated jelly as are still to be found within the sea, 

 how is it that some have remained throughout infinite 

 periods of time unchanged ; that others have remained 

 in the form of the sponge, rooted upon rocks ; that 

 others, like the lobster, have never exchanged their 

 jointed bodies for the more perfect skeleton of the 

 fish : that some fish have taken to the land, and have 

 been converted into reptiles, and then into birds or 

 quadrupeds, while others have remained in the aqueous 

 condition ; and lastly, that one animal, namely Man, 

 has contrived to distance all the others when, as it is 

 acknowledged, they all started fair ? 



In reply, let me ask those who admit the develop- 

 ment of all civilized people from the savage state — 

 and that no geologist will now deny ; — let me ask 

 them how it is that Europeans have advanced (this 

 involving a change in the structure of the brain), 

 while others have remained in the savage state, others 

 in the pastoral condition, others fixed at a certain 

 point of culture, as the Hindoos and the Chinese ? 

 The analogy is perfect, and the answer is in either 

 case the same. Those forms remain stationary which 

 are able to preserve their conditions of life unchanged. 

 The savages of the primeval forest, when the game is 

 exhausted in one region, migrate to another region 

 where game exists. They remain therefore in the 



