FIFTH ANNUAL YEAR BOOK — PART VI. 



529 



TABLE 2-NUMBER OF ACRES DRAINED BY OPEN DITCHES. 

 Depth of Water 3 feet. Depth of Ditch at least 4 feet. 



TABLE 3. -NUMBER OF ACRES DRAINED BY OPEN DITCHES. 

 Depth of Water 5 feet. Depth of Ditch at least 6^ feet. 



Grades. 



Average Width of Water. 



34 



