B. IX.] THE HISTORY OF ANIMALS. 279 



to ruminate, and do so most in the winter ; those which are 

 brought up in shelter ruminate for nearly seven months. 

 Those that live in herds, ruminate for a shorter period, for 

 they live out of doors. Some animals with cutting teeth in 

 both jaws, ruminate, as the Pontic mice and the fish, which, 

 from this process, is called meryx. Animals with long legs 

 have loose bellies, and those with broad chests vomit more 

 easily than others, in quadrupeds, birds, and the generality 

 of mankind. 



