Bui. 90, Part I, Bureau of Entomology, U. S. Dept. of Agriculture. 
Plate II. 
Fig. 1 .—Brick Furnace, Tank, and Derrick Used in the 
Tannin Treatment of Tents to Prevent Mildew, 
San Bernardino County, Cal. (Original.) 
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Fig. 2. 
■Machine for Covering Tree with Sheet Tents. Devised by C. E. 
McFadden, of Fullerton, Cal. (Original.) 
