72 POWER ON THE FARM 



of streams can be turned into electric energy, which 

 by wires can be carried to the electric motors on the 

 farms. 



QUESTIONS 



1 . In ancient times what was the main source of power used 

 in farming ? 



2. What are draft animals ? Name several draft animals. 



3. What animals are raised in this country for power? 



4. What farming operations require a large amount of power? 



5. What are some of the advantages of using engines for 

 power on the farm ? 



6. For what purposes are windmills used? 



7. How may streams be used to furnish power for farms ? 



REFERENCES 



Farmers' Bulletins: 277, Use of alcohol and gasoline in farm 

 engines ; 394, Use of windmills in irrigation in semiarid West. 



