PLATE 63 
Dwarfing effect of Bacterium solanacearum when inoculated into hypocotyls of seed¬ 
ling cotton, variety Egyptian. Controls in the background. The inoculation was by 
needle pricks, and the plants were all of the same size at that time. The organism 
was obtained from North Carolina tobacco. A few days later all the inoculated plants 
wilted and shriveled, at which time they were full of the parasite. Older plants did 
not take the disease. Photographed July 26, 1920. Time from inoculation, 5 days. 
For later stages of the disease obtained with the Ricinus wilt organism see Plate 64. 
