588 



BACTERIAL DISEASES OF PLANTS 



FIG. 433. No. 6, first series. Upper face of leaves Z and Z 1 of Fig. 432. Z 

 shocked on July 25. Z 1 was too old at that time to res-pond freely. Notice 

 regular distribution of shoots in Z and compare with midrib distribution on Figs. 

 438, 441, 442, 443. Notice also that the largest leaves are over the main water- 

 supply, i.e., over the midribs. About % natural size. 



