516 



BACTERIAL DISEASES OF PLANTS 



FIG. 387. Cross-section of one of the mulberry tumors shown in Fig. 386. 

 It is a hyperplasia: A, normal part; B, chlorophyll band; C, lenticel proliferation. 

 Photographed from an unstained section mounted in water. 16 mm. obj., 4 oc. 

 and bellows at 45. 



