DRAINAGE. 33 



Bulletins, U. S. Department of Agriculture. 



FARMERS' BULLETIN. 



Number. 



40. Farm Drainage. 



524. Tile Drainage on the Farm. 



187. Drainage of Farm Lands. 



371. Drainage of Irrigated Lands. 



158. How to Build Small Irrigation Ditches. 



263. Practical information for Beginners in Irrigation. 



373. Irrigation of Alfalfa. 



399. Irrigation of Grain. 



404. Irrigation of Orchards. 



329. Dry Farming. 



138. Irrigation, in Field and Garden. 



