Bui. 379, U. S. Dept. of Agriculture. 



Plate VII 



Fig. 1.— Remains of Threshing Outfit After Smut Explosion and Fire, near 



Pullman, Wash. 



Fig. 2.— Pile of 750 Sacks (1 ,875 Bushels) of Wheat Destroyed by Fire from 

 Explosion in Above Machine. 



