80 
also lor aphides, and with both these and the chrysanthemums, the 
experiment seemed an unqualified success. 
The accompanying illustration shows the complete box as used 
to enclose large potted plants. It would seem that this method of 
treatment admits of application to a greater or less degree, accord- 
ing to circumstances. The results indicate very little danger to 
ordinary’ greenhouse plants from the use of the vapor of Carbon 
Bisulfide. We were assisted in these experiments by Mr. W. A. 
Porter, and the tests were made in the greenhouses of the Ohio 
Agricultural Experiment Station. 
F. M. Webster, Entomologist, 
Aug. D. Selby, Botanist 
Wooster, Ohio, March i, 1895. 
■V. 1 
