PAIS dl 
THE MEANING OF DOMESTICATED RACES AND 
THE MANNER OF THEIR IMPROVEMENT 
CHAPTER 1 
THE DEPENDENCE OF MAN UPON DOMESTICATED ANIMALS 
AND PLANTS 
Animals and plants as sources of food- As sources of clothing . As sources 
_ of shelter - Vegetable products as sources of heat and light. Dependence of 
man upon animal labor - Animals a means of recreation - Animals and plants 
as sources of raw material for manufacturing purposes - Medicinal properties 
of animals and plants - The business of farming 
Few realize the extent of our dependence upon the plant and 
animal life about us, and the variety of ways in which domesti- 
cated animals and cultivated plants have been made to serve the 
interests and forward the plans and purposes of man. 
Animals and plants as sources of food. Aside from air and 
water there is no article of food, common or uncommon, that 
does not come directly from the animal or the plant. 
Meat, milk, and eggs, the three standard animal foods, repre- 
sent the body and its products. Bread, however made, represents 
the starchy seeds of certain plants, and edible oils are invariably 
of either plant or animal origin. 
To these staples we add, for luxury and for health, a great 
variety of fruits and vegetables, not to mention sweets, but they 
all arise from plant life somewhere in the world. 
Most of the food plants are cultivated, and most of the 
animals are domesticated. The savage may live by the hunt, 
but it is one of the first evidences of civilization that a race 
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