249 NEW ZEALAND NATURE-STUDY BOOK 
in the manufacture of matches is obtained from the bones, 
which also supply much of the bone dust so necessary to 
the farmer. 
The hide, stripped of the outer skin and hair, and 
treated with tannic acid, is converted into leather, and the 
hair is used for making tar-cloth, for covering buildings, 
and lining walls and roofs. 
XXII.—THE SHEEP. 
Description. The Sheep is a hoofed mammal, belong- 
ing to the even-toed division of this order. It resembles 
the Cowin many ways—for instance, it is hoofed and even- 
Fig. 143.—The Sheep. 
toed ; its head is frequently provided with horns ; it is 
a plant-eater and chews the cud, and hence its teeth, 
stomach, and intestines are identical with those of the 
Cow. It differs from the Cow mainly in its size, and in 
the woolly coat covering its body. 
The horns, with which the head of the male Sheep are 
usually provided, are directed backwards and then either 
twisted or spirally coiled. The animals use them as a 
