PART IV. 
DISEASES AND TREATMENT OF SHEEP AND 
PIGS. 
SHEEP. 
HEEP belong to that class of animals called Rumin- 
ants — those that chew their cud. The act known as 
Rumination is fully described in Part III. 
The skeleton of the sheep is built on the same principle 
as that of the ox. It is much sm^aller, but the bones, joints, 
etc., are so similar that it is unnecessary to present them here. 
The skin differs from that of the ox in the matter of 
being covered with wool instead of hair. It also contains 
many small glands for the secretion of oil with which to 
lubricate and soften the wool. 
