PLATE II. 
Fic. 1.—BRANCHES OF YELLOW NEWTOWN APPLE TREES, SHOWING VARIOUS STAGES 
OF THE “ROUGH-BARK”’ DISEASE. 
Fig. 2.—YELLOW NEWTOWN APPLE TWIGS, SHOWING THE ‘‘ROUGH-BARK” DISEASE 
PRODUCED BY ARTIFICIAL INOCULATION WITH SPORES OF PHOMopPsSIS MALI. 
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