368 



BACTEEIAL DISEASES OF PLANTS 



FIG. 283. Bark of an apple tree in spring showing Bacillus amylovorus oozing 

 to the surface from a patch of "hold-over" blight. Enlarged 6 times from 

 a photographic print furnished by Prof. H. H. Whetzel. Planar by James F. 

 Brewer. 



