165 WAYS OF 



WORKING 



B. F. Calvert, of Willows, California, reports 

 $1200.00 from an acre irrigated with his iron 

 gasoline engine: the highest, watermelons, giv- 

 ing $300.00, down through strawberries, black- 

 berries, Logan berries, tomatoes, to the lowest, 

 cabbage, $100.00. The fuel costs only fifty- 

 cents a day. 



The simple method of surface irrigation is to 

 lay out at some distance at least 100 feet 

 from the house a small sewage farm where the 

 sewage may flow over the surface and slowly 

 sink into the ground, which should have suffi- 

 cient slope, and the soil should be porous, not re- 

 tentive. 



The liquid sewage, including kitchen and cham- 

 ber slops, is conducted to this field in a water- 

 tight drain and then allowed to flow into shallow 

 trenches. To avoid the overloading of the soil 

 with sewage at any one place, the main distrib- 

 uting trench should be so arranged that it, and 

 the irrigation trenches branching from it, may be 

 temporarily blocked at any point to divert the 

 sewage into one or more different trenches every 

 day. In winter the warmth of the sewage will 



