PLATE 1 
A. -—Healthy head of Goens (Red Chaff) wheat in bloom and a head of the 
same variety affected with loose smut. The periods during which the healthy 
heads are in flower and spores are blowing from the diseased heads are coinci¬ 
dent. Infection takes place intraseminally. 
B. —At the close of the flowering period of the healthy heads. Practically all 
of the smut spores have been blown from the diseased heads. 
(98) 
