Smithsonian Report, 1920 — Garner and Allard. 



Plate 10. 



Hibiscus. Plant on left, exposed to light from 9 a. in. to 4 p. m. daily, was unable to flower or to make 

 any appreciable growth. Plant on right, left out of doors throughout the test, which began June 7, 

 grew rapidly and flowered August 22. Note seed pod at top of plant. Photographed September 8. 



