PLATE 49 
A. —Blighting barley culms at heading stage. The sheaths so sealed by the bac¬ 
terial exudate as to prevent the escape of the inclosed heads which thus perish unde¬ 
veloped. X f. 
B. —Barley seedlings showing abundant infections on first leaves three days after 
atomizer inoculation with strain of organism isolated from 2 -year-old seed. The photo¬ 
graph was made, using chiefly transmitted light to show the translucent character of 
the invaded areas. X 
