MOSAIC POKEWEED AND MUSKMELON PLANTS 
A. Mosaic pokeweed plants, Phytolacca decandra (at right) inoculated from a mosaic cucumber 
plant. Healthy control plants at left. Madison, Wis., April, 1923 , , 
B. Mosaic muskmelon plants (at left) inoculated by means of aphids from a mosaic pokeweed 
plant. Healthy control plant at right. Madison, Wis., 1923 . 
C. Mosaic pokeweed plant (at right) inoculated with cucumber mosaic, showing extreme dis¬ 
tortion and mottling of foliage. Healthy control plant at left. Madison, Wis., 1923 
