364 



Irrigation and Drainage 



system. It will be seen that the land is laid out 

 so as to use the surplus drainage water over again, 

 by collecting it into a foot ditch which is extended 

 to a lower level in the field, where it becomes the 

 head ditch, and discharges its water into another set 

 of distributaries, as represented in the plan, the over- 



Fig. 98. Model of field laid out for water-meadows, with slopes exaggerated. 



flow water from the upper section being used upon 

 the third or lower section. The area shown in the 

 plan is about 26 acres, the distance between the 

 distributaries about two rods, and the crests stand 

 nearly 10 inches above the troughs. In Fig. 98, there 

 is ? represented a small piece of ground laid out upon 

 this plan on a reduced scale. 



It will be seen that this system of irrigation not 

 only involves a large amount of labor to fit the land, 



