54 "MISC. PUB. 526, U. S. DEPT. OF AGRICULTURE 
large quantities of the insecticide were tested, particularly by the 
University of Wisconsin, as a substitute for pyrethrum in the control 
of the potato leafhopper. ‘The insecticide has also been tested against 
various other insects, including the squash bug and the housefly. 
Caution.—The alkaloids contained in sabadilla seed are poison- 
ous. Therefore, care should be taken in preparing and applying 
sabadilla insecticides. Exposures to sprays and dusts are re- 
ported to cause sneezing with many individuals, and with some to 
cause symptoms of illness, including vomiting. 
