Botany and Zoology. 133 
_ period, whether it have 1 hoof on each foot, as in the horse, 3 as in the 
rhinoceros, or 5 as in the elephant, resembles the paleeotherium in havi 
the stomach more or less complex, and the excum small and simple. In 
Tuminant would have been exposed a long time in the open prairie or sa~ 
Vvannah : 
Th Sn alk seomanch, by seh 
© modifications of the dentition, esophagus, 2 — 
the digestion in the Ruminantia is carried out, were described and illus- 
rams. 
jariti e persistent horns, the mechan- 
of the cloven foot; and the provision for maintaining the hoofs in a 
small musk-deer Tragulus), there are three cavities, with a small in- 
_ tercommunication — — the second and last cavity ; the « psalte~ 
num” or third cavity, in the normal ruminating stomach, being absent. 
cavity is likewise absent in the camel-tribe, which have the cells of 
Pe 
