no 



THE BOOK OF THE PEACH. 



powder in small spots, and which quickly spread if 

 not checked. Either extreme will produce mildew 

 dryness at the roots or a low, over-humid atmo- 

 spheric temperature. 



FIG. 25. LEAF OF 1'EACH ATTACKED BY " BLISTER" 

 FUNGUS (ASCOMVCES DEFOKMANS). 



Blistered leaves are caused by a spell of cold follow- 

 ing a short period of warm, genial weather (see Figs. 

 25, 26, 27, and 28). The growth of the midrib being 

 checked, the sap is thereby obstructed in its circula- 



