PLATE 64 
Ricinus wilt on seedling cotton. Controls at left. Plants inoculated in the hypo- 
cotyl by needle pricks, July 2, 1918, from inoculated tomato No. 1. Plants badly 
dwarfed and bacteria very abundant in the tissues. Photographed (A) July 15, 1918; 
(B) July 13, 1918. Each was inoculated with subculture from a poured-plate colony, 
and the controls were of the same size as the others when the inoculations were made. 
