CONCLUSIONS. 237 



most strata of the earth's surface, and probably the very 

 last large animal which became extinct before the creation 

 of man.* 



Fig. 170. 



499. It is necessary, therefore, to distinguish two periods 

 in the history of the animals now living ; one in which the 

 marine animals were created, and a second, during which 

 the land and fresh- water animals made their appeart nee, and 

 at their head MAN.! 



CONCLUSIONS. 



500. From the above sketch it is evident that there is a 

 manifest progress in the succession of beings on the surface 



* The above diagram is a likeness of the splendid specimen disinterred 

 at Newburg, N. Y., now in the possession of Dr. J. C. Warren, in Boston $ 

 the most complete skeleton which has ever been discovered. It stands 

 nearly twelve feet in height, the tusks are fourteen feet in length, and 

 nearly every bone is present, in a state of preservation truly wonderful. 



f The former of these phases is indicated in the frontispiece, by a nar- 

 row circle, inserted between the upper stage of the Tertiary formation 

 and the Reign of Ma-' properly so called. 



