PLATE 60 
Two plants showing Ricinus wilt, with two controls of the same age in the back¬ 
ground. The wilting plants were inoculated July 2 by needle pricks in the top of 
the hypocotyl with 24-hour potato subculture from poured-plate colony from tomato 
No. 1. Introduced to show the profound dwarfing. The diseased plants were 7 
inches tall and the controls 22 inches. Photographed July 30, 1918. 
