A MANUAL OF THE THEORY 

 AND PRACTICE OF EQUINE MEDICINE. 



INTEODUCTORY. 



The Ungulata, or Hoofed Quadrupeds, one of the largest 

 natural orders of the Mammalia, are classified into two 

 sub-orders, according as the animals have an odd or an even 

 number of toes on the hind-foot. Those which have an 

 odd number on the hind-foot are termed Perissodactyla 

 (Tspiffffog, odd, and daxruXog, toe), and those which have an 

 even number are termed Artiodactyla (apr/os, even, and 

 dazrvXcg, toe). 



To the latter group belong such animals as the Pig, Hip- 

 popotamus, Sheep, Ox, Camel, Girafife, and Deer. The 

 Tapir, Horse, and Ehinoceros make up the former group. 



The Artiodactyla are divided into two classes : the Rumi- 

 nantia, and the Non-Ruminantia. 



The Ruminantia include the Sheep, Ox, Camel, Giraffe, 

 and Deer ; and the Non-Ruminantia include the Pig and 

 Hippopotamus. 



All the Ungulata, excepting the Pig and Peccary, which 

 are omnivorous, feed upon vegetables. Their placentation 

 is non-deciduate, and in this they agree with the order of 

 the Cetacea; and they are always adapted for swift pro- 

 gression. 



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