PALAEONTOLOGY SINCE CUVIEE. 67 



too early an age. His works also belong to the 

 seventh decade and treat more especially of the 

 Hoofed animals ; they contain the most important 

 supplements to Eiitimeyer's works, for he, at 

 times, takes up entirely new standpoints for deter- 

 mining the connection between the present and 

 the remote periods. He has not done so much in 

 bringing to light new forms, as in carefully com- 

 paring those long since known. Certain opinions 

 about primary and fundamental forms, such as 

 Palseotherium, Anoplotherium, Dichobune, and 

 others, which had become traditional since Cuvier's 

 day, he has finally corrected, and has in a masterly 

 way clearly defined the essential differences be- 

 tween odd-hoofed and pair-hoofed animals ; he has 

 also endeavoured to explain the disappearances of 

 forms, and the continuance and transformation of 

 others by very careful examinations, more particu- 

 larly of the hand and foot. Accordingly he has 

 set up pedigrees which do not indeed differ in 

 many points from the results given by Riitimeyer, 

 but they are certainly proofs of the extremely sug- 

 gestive and ingenious manner in which he con- 

 templates the primeval world, in its continuity with 



tion der fossilcn Hufthiere. Monographic der Gattung Anthra- 

 cotherium (Palaeontographica, 1876). 



F 2 



