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APPLE SCAB OR BLACK SPOT. 



of a fruit to be drawn and prevent it from assuming its proper 

 shape. The leaves are also seriously affected by this fungus, which 

 appears at first in dark green spots. Afterwards the spots assume 

 a brownish colour and the tissue cracks and dries up, leaving holes 

 in the leaves. Sometimes the spots are so numerous that the leaves 

 are reduced to fragments. The spores of this fungus are pro- 

 duced in enormous numbers, and each one under favourable con- 

 ditions may develop into a " scab." Remedies : The affected leaves 

 and fruit, when practicable, should be destroyed by fire that is, 



