Perth Amboy 
New Jersey 
Cyanide o Potassium 
Guaranteed 9/9 per cent. 
FOR GENERATING 
Hydrocyanic Acid Gas 
THE MOST EFFECTIVE 
FUMIGATING MATERIAL 
To Destroy Scale Insects on Fruit Trees, Nur- 
sery Stock, and Plants of all kinds under 
Glass and in Greenhouses; also Insects in 
Mills, Elevators, Warehouses, Cars, Ships, etc. 
.-- Manufactured by the... 
Roessler & Hasslacher Chemical Co. 
100 William Street, New York 
