CULTIVATION. 



tiles are 1| inches, 2|- inches, and :SJ inches in int.- 

 rior diameter. Sections of the 2| inch make collar, 

 for the 1 inch, and sections ,,f the IJ.V inch make 

 collars for the 2 inch. The 3| inch does not ,,.,,] 

 collars, as it is easily secured in place, and is mlv 

 used when the flow of water would he sufficient to 

 wash out the slight quantity of foreign matters that 

 might enter at the joints." * 



FIG. 4 Sole Tilo. 



This tile is made (like the horse-shoe and pipe tile) 

 of common brick clay, and is burned tin- san. 

 bricks. It is about one half or three quarters of an 

 inch thick. The orifice through which the water 

 passes is egg-shaped, having its smallest curve at tin- 

 bottom. This shape is the one most easily kept dear, 

 as any particles of dirt which get into the drain 

 must fall immediately to the point where even tl:o 

 smallest stream of water runs, and are thu- removed. 

 An orifice of about two inches rise is sufficient for the 

 smaller drains, while the main drains require hi 

 tiles, 



These tiles are so laid that their ends will touch 

 each other, on the bottoms of the trenches, and are 

 kept in position by having the earth tightly packed 



* Draining for Profit and Draining for Health, by G. E. Waring. 

 Jr., page 81. 



