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VIL 
ILLUSTRATIONS. 
First type of the lyer-disease, 
(White parts on the drawing indicate diseased yellowish parts 
of the leaf, the black parts indicate healthy, green parts 
of the leaf). 
Second type of lyer-disease. 
fig. 1 —3. Three forms of the second type of disease. 
fig. 4. Part of maize-leaf showing chlorose. 
Third type of lyer disease. 
fig. 1. Oldest leaf of a maize-plant, affected by the third type 
of disease. 
fig. 2. Younger leaf of the same plant. 
fig. 3. Youngest leaf which shows the disease; same plant. 
fig. 1 — 4. Ears from heavily diseased maize-plants. 
fig. 1. Upper part of conidiophore. 
fig. 2. Conidiophore. 
fig. 3. Germinating conidia. 
