A Story Outline of Evolution 



stirred the rich alluvial soil that yielded to him his daily 

 bread. 



It was thus that the beasts of burden came into use at a 

 period many thousands of years removed from the time 

 primitive man shaped his first implements from flint. Before 

 this period, the only force he controlled v^as the muscular 

 force of his body. After the use of iron was discovered, 

 the wooden plow was supplanted by one made from Iron. 

 The leather harness for cattle was supplanted by the yoke 

 and in this form the use of muscular power continued 

 throughout unknown centuries. 



At the period when man first began to use beasts of 

 burden In his work, the herd instinct still clung to him but 

 his village sites were taking on forms of barbaric life. He 

 had tamed and domesticated horses, cattle, camels, hogs, 

 goats, sheep, dogs and chickens. Wild game was becoming 

 scarcer and more diflicult to secure and by taming the ani- 

 mals and having them about him, and by cultivating the 

 crops as he had learned to do, there was no necessity for 

 periods of hunger and starvation. He adapted himself to 

 the conditions of his environment just as people do today. 

 Upon the grassy plains, he became the herdsman caring for 

 his flocks, in the valleys, he became the farmer and the fruit 

 grower. In the colder regions, he wore clothing made from 

 skins or the cloth that he had woven, and in the tropical 

 regions, he wore no clothing at all. His food also was 

 regulated by climatic conditions and by his surroundings. 



At about this same period of time, the custom of barter 

 and trade came Into being. The desire for private posses- 

 sion and ownership is an inherent human Instinct. Some 



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