INTRODUCTION 15 



tions more desirable and satisfactory, either by relieving the 

 worker of hard labor, or by providing more healthful and 

 pleasing surroundings. 



Farm Mechanics. The term Farm Mechanics is not as 

 comprehensive in meaning as Agricultural Engineering, yet 

 it is often used to designate the same branch of education. 

 Mechanics is the science of forces and their actions; whereas 

 engineering proper is based upon a knowledge of these forces 

 and treats more particularly of the directing of them to 

 secure their most advantageous use. 



In this text the subject of agricultural engineering is 

 presented under the following heads : 



Agricultural Surveying. 



Drainage. 



Irrigation. 



Roads. 



Farm Machinery. 



Farm Motors. 



Farm Structures. 



Farm Sanitation. 



The importance and relation of these various branches 

 to agriculture are discussed in the separate parts of the text 

 devoted to each. 



QUESTIONS 



1. Define the term engineering. 



2. Show how engineering methods are involved in crop production. 



3. Define the term agricultural engineering. 



4. Is there any relation between the producing capacity of a farm 

 worker and the amount and kind of power used? 



5. Distinguish between "farm mechanics" and "agricultural 

 engineering." 



6. Name the principal branches of agricultural engineering. 



