22 



Anecdotal Natural History. 



secreted. In the calf it is called ' rennet,' and is used 

 for curdling milk in the preparation of cheese. 



While the animals of this class, the Ruminants, are 

 still young, and are fed by their mother's milk, the fourth 

 stomach only is fully developed, the other three not 



Arabian Camel. 



being required until the animal is old enough to find 

 its nourishment in vegetable substances. 



This structure is common to all the ruminating 

 animals, but in the camel there is found to be a still 

 further development. The polygonal cells which are 



