vi Preface 



management, even when neither irrigation nor 

 drainage is practiced. 



Great pains has been taken to personally 

 inspect the irrigation practices of both humid and 

 arid climates in this country and in Europe, to 

 gain a broader view of essential details, and to 

 secure suitable illustrations, which are presented 

 largely as photo -engravings, in the hope of getting 

 closer to the spirit of the subject. 



Free use has been made of all available litera- 

 ture on the subject, and credit is given throughout 

 the body of the text to various writers and 



works. 



P H. KING. 



UNIVERSITY OF WISCONSIN, 

 March, 1899. 



