38 
Journal of Agricultural Research 
Vol. XXVI, No. I 
Fig. 6.—Graphs showing the effect of a cloud passing over the sun upon the temperature of the air and of 
the leaves of wilted and turgid plants. The cloud completely obscured the sun at 10.04 a. m., July 25, 
1922. 
Fig. 7. —Graphs showing the effect of a cloud passing over the sun upon the temperature of the air and of 
the leaves of wilted and turgid plants. The cloud completely obscured the sun at 1.19 p. m., July 13, 
1922. 
