326 



'MANUAL OF FRUIT DISEASES 



usually marked by a crevice (Figs. 87 and 88). In the spring 

 the canker has a soaked appearance, the advancing margin 

 being indefinite or raised. Sometimes milky or reddish brown 



FIG. 86. Twig- 

 blight. Tip of a 

 shoot blighted by 

 the fire-blight bac- 

 teria. 





FIG. 87. Hold-over canker. Note that it 

 surrounds a stub of a twig. 



drops ooze from the lenticels (Fig. 89) ; the presence of this 

 ooze, however, is not a constant character. Not infrequently 

 fire-blight and winter-injury are confused. In contrast to a 

 sudden and local dying of the affected organs in the case of 

 fire-blight, winter-killing manifests itself by a general wilting 



