UNDERDRAWING. 



83 



In covering, put sods or the black surface soil Covering Tiles, 

 next to the tiles. The reason for this is that the 

 surface soil is composed of vegetable matter and 

 will prevent the subsoil from getting in at the joints. 



If the drains are properly laid, the least per- Diagram 

 ceptible fall will be sufficient to carry off the water mpor 

 without clogging. A correct diagram of all drains 

 should be made and kept for future reference. 



EARLY SOY BRANS. 



