LUTHER BURBANK 



age with common drain tile the best system for 

 ordinary conditions, and it is with this system that 

 I have had most experience. The discussion is 

 given mostly from the viewpoint of results on my 

 own grounds. 



Small, well-burned drain tile was used on my 

 Santa Rosa ground carefully laid with a slope of 

 1 foot to 40 feet and it has proven eminently satis- 

 factory in every respect for twenty years. The 

 soil is a heavy adobe and was almost worthless 

 before it was drained. 



The good results of the drainage were scarcely 

 apparent the first year, but the benefits were mul- 

 tiplied each year until now the soil is easily culti- 

 vated and bears enormous crops while before 

 draining no crop could be raised. 



This system consists of one main line of 4-inch 

 tile with laterals of two-inch tile every 40 feet. 

 The laterals gather the surplus water quickly after 

 a heavy rain and the main tile carries it to a small 

 stream near by. 



The laterals do not need such a large capacity 

 as most people think. It must be remembered that 

 they work both day and night, and Sundays as well 

 as week days and a very small tile will carry a 

 great amount of water in the course of twenty-four 

 hours. 



It is a good plan to have the tiles flushed now 



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