Bui. 90. Part I, Bureau of Entomology, U. S. Dept. of Agriculture. 



Plate IV. 



Fig. 1.— Supply Cart Used with the Improved System of Fumigation. < Author's 



Illustration, i 



Fig. 2.— Supply Wagon Devised by C. E. McFadden, of Fullerton, Cal. (Original.) 



