ISKW YOIIK AgRIUULTUKAL Exi'ElilMEXT STATION. 157 



are 50 iuches in diaraoter. Tlio forc-whrels are 40 inches in di- 

 ameter. Tbej were obtained of the Electric Wheel Co., Quincy, 

 111. 



tank:. 



■A half-round tank was obtained from Thompson, Habmar and 

 Fisher, Tonawanda, N. Y. It is made of If inch cypress, the top 

 cross plates being 2x5 inch oak. Dimensions 6 feet by 2 feet 9^ 

 inches by 1 foot 9 inches, capacity 250 gallons. 



GEARING. 



The pump is geared to the left hind wheel by means of chains 

 combined with a eihaft and four sprocket-wheels. The large 

 sprocket-wheel, which is attached to the truck wheel, has a 

 diameter of 25 inches and bears 49 teeth. The small sprocket- 

 wheel on end of shaft is S| inches in diameter, and has 16 teeth. 

 The large sprocket-w^heel on shaft has a diameter of 17 inches 

 and carries 32 teeth. The small 8 toothed sprocket-wheel on 

 crank shaft of pump has a diameter of 5 inches. A " clutch- 

 gear " is attached to large sprocket-wheel on shaft. The size of 

 chain used is No. 45. 



PUMP. 



The selection of a pump was not an easy matter. It was neces- 

 sary to have a pump that would throw at least 300 gallons per 

 hour. Rotary pumxjs would meet the above requirement, but 

 these have usually been found short lived when used for pump- 

 ing Bordeaux mixture. The addition of the resin solution is hard 

 on single plunger brass pumps and would make matters worse 

 in the case of rotary pumps. No manufaeturers of single or even 

 double-plunger brass pumps would warrant their pumps to throw 

 300 gallons per hour, nor could any of them tell how high it 

 would be necessary to speed such a pump to make it throw the 

 required amount. 



It was finally decided to test a single-acting triplex pump made 

 by the Gould Manufacturing Company, Seneca Falls, N. Y. This 

 pump was scheduled to make 50 revolutions per minute and 

 throw 360 gallons per hour. It had the disadvantage of having 



