Bui. 1 26, U. S. Dep-t. of Agriculture. 
Plate IV. 
Fig. 1.— Covering Used for Canal and Method of Heating when Concrete 
Lining was being Constructed, North Side Twin Falls Land & Water Co., 
Milner, Idaho. 
&r jit* 
"Y^ 
Fig. 2.— Outside View of Covering Used for Canal when Concrete Lining 
was being Constructed, North Side Twin Falls Land & Water Co., Milner, 
Idaho. 
