lo Jan., 1911.] 



Irrigation. 



59 



series of checks is not required. The forming of checks is generally 

 the last operation in grading, and in order to make them neat and effec- 



30. SMOOTHER. WITH LO.-^D READY TO SPREAD OR DROP. 

 Xnte the platform behind the man on machine. 



tive, their positions, when determined, should be marked out with a single 

 .shallow furrow in order that they may, be plainly visible to the grader. 

 Where possible, the checks should be made parallel to each other, and 

 al.so to one side of the field, to facilitate the work of the implements used 



31. S.MOOniER. KAKTII DKOIT'ED TO FORM CHKCK. JiANK. 

 Till' man is now staiuliiiii ut rrur eml of pintfcirni. 



afterwnrds for harvesting, and ;il>() to simplify their t-onstruction. It 

 is rarely th;it there are not .some surtacc inequalities left, even with tlie 



