8 Feb., 1908.] 



Preparing Land for Irrigation!. 



113 



ploughing and harrowing brings them down to a low flat form, as shown 

 in Fig. 5. Another levee is placed around the margin of the field to 



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4 



6^'- 



Fig. 6. Check Box ; upper view shows Section across the Embankment, lower view 

 lengthwise the embankment. 



control the water within it and, when it can be done, it is a good plan 

 to have a drain ditch at the lower side of the field to carrv off the waste 

 water. If checks are filled from each other, simple water gates are placed 



Fig. 7. Home-made Ridger. 



in the levees at such places and distances as will facilitate the distribution 

 of water. These gates are simplv boxes, each having a bottom and two 

 sides, with slats across the top to hold the sides in place. (Fig. 6.) About 



