Bul. 379, U. S. Dept. of Agriculture. PLATE III. 
Fia. 1.—BLAcK SmMuUT-DUST CLOUD COMING OuT OF BLOWER PIPE DURING THRESHING 
OF SMUTTY WHEAT IN EASTERN WASHINGTON. 
Fic. 2.—STEEL MACHINE BADLY DAMAGED BY SMUT EXPLOSION AND FIRE IN EASTERN 
WASHINGTON. 
Fia. 3.—WoOoDEN MACHINE COMPLETELY DESTROYED BY SMUT EXPLOSION AND FIRE 
IN PACIFIC NORTHWEST. 
