Ill 
Fig. 761, For operation by gasoline engine. 
The 
Duplex Power Sprayer 
May be belted to any gasoline engine. Made in two sizes. 
No. 1 has capacity of 4j gallons per minute; No 2 has 10^ 
gallons capacity: good for 200 pounds pressure. This pump is 
used on our “Victory” and “Victory Junior” power sprayers. 
It is dependable, and efficient. 
Our complete spray pump catalogue 
sent on request. 
Ask also for booklet, “Deming Water Systems,” giving details 
of our hydro-pneumatic systems of water supply. 
THE DEMING COMPANY 
SALEM, OHIO 
“More than a Thousand Styles and Sizes *’ 
of Hand and Power Pumps for All Uses. 
Please mention the Journal of Economic Entomology when writing to advertisers 
