Bui. 87, U. S. Dept. of Agriculture. 
Plate VII 
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# 11 
Fig. 1 
-A Flume in the Construction of which Small Round Timber was Used 
for Everything Except the "Box." 
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Fig. 2.— Crude Form of Flume Construction where only the Lining is of 
Sawed Lumber, the Remainder being Constructed of Small Round Timber 
and Poles. 
