CHAPTER XLIV 

 THE ANIMALS OF THE EARTH 



Domestic animals. Of all the animals of the earth, the most 

 important to man are the farm animals, such as the cow, the 

 sheep, the pig, and the horse. Cows are invaluable because the 

 milk which they yield is the sole food of millions of babies. 

 Milk is secreted by the cow for the nourishment of the young 



calf, but man by 

 milking the cow se- 

 cures the milk for 

 human consumption. 

 A good cow yields 

 4000 pounds of rich 

 milk a year, and 

 many cows, such as 

 the best Guernseys, 

 yield much more. 

 The quantity of milk 



FIG. 327. The Jersey cow gives rich milk. u j i_ 



yielded by a cow is 



not always the most important factor, because milk must be 

 rich in fat as well as abundant in quantity. The quantity 

 and richness of milk depend to a great extent upon the care 

 the animal receives ; good feeding, cleanliness of the stable, airy, 

 light stalls, and careful milking enrich the milk and make it 

 more abundant (Fig. 327). 



The young lamb, like the young calf, receives food from its 

 mother; this is also true of the young goat. But man has 



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