PLATE 1« 
A. —Delphinium leaf from Maine, 1923. Small spots. 
B. —Delphinium leaf from Castine, Me., 1922. Large spots caused by Bad, 
delphinii. Reduced slightly. 
C. —Spots on delphinium leaf produced by spraying with water suspension of 
a subculture of a single colony freshly isolated from a leaf from Maine, in July 
1923, 32 days after inoculation. 
<*A11 photographs were made by James F. Brewer. 
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