498 



BACTERIAL DISEASES OF PLANTS 



f-LK. 



/ 



Fig 374 — Uncler-surface of a cauliflower leaf sprayed with formic acid 

 water (Koo) on March 24, 1917. Photographed March 3L Natural size. 

 Shows small tumors and white (killed) areas. See pi. 55 J. Ag. Res. Jan. 29, I! 



1917. 



