82 



LAND DRAINAGE 



FIG. 29. A system which has been developed solely by the require- 

 ments of the field. Originally, the system comprised only that part 

 occupying the marsh area in the southwest corner of the field. 

 Later, the branches running into the east end of the field were 

 laid. Next, the small branch leading to the small marsh area in 

 the upper central part of the field ; and this later was extended into 

 the marsh area in the upper left hand corner. 



