1908.] PUBLIC DOCUMENT- -No. 73. 147 



hundred and ninety trees were treated during the forenoon. Water 

 was hauled about VA of a mile, and 30 per cent, of the trees were 

 climbed. 



Outfit. 



A 4^/2 horse-power Olds gasoline engine, with duplex pump and a 

 300-gallon tank, was the essential feature of this outfit. A single line 

 of 1-inch lead hose was connected with 4 lines of V^-inch hose. The 

 pressure ranged from 90 to 125 pounds, and the nozzles used were of 

 the Vermorel type. 



Cost. 



1 foreman, -| day, . $2 25 $1 13 



1 engineer, day, . . 2 25 1 13 



1 team and driver, \ day, . 4 50 2 25 

 5 climbers, \ day, . 2 25 5 63 



2 ground men, \ day, . 2 00 2 00 

 30 pounds disparene, . 12 3 60 



2 gallons gasoline, . 20 



Oil, grease and waste, . 05 



Total, . $16 19 



Average cost of treatment, 8.5 cents per tree. 



READING, JUNE 28, 1907. 



The spraying of small shade and fruit trees and shrubbery, by means 

 of a gas power sprayer, was under observation here on this date. 



< 



Outfit. 



This spray rig consisted of a 100-gallon iron tank, equipped with an 

 agitator and connections with gas tank. The tank was mounted in a 



O Q 



one-horse wagon, the mixture being constantly agitated while the spray 

 was being applied. Two lines of Vs-inch hose, equipped with gas pipe 

 extensions and double Vermorel nozzles, completed the outfit. Dis- 

 parene was used at the rate of 10 pounds to 100 gallons of water. 



Cost. 



3 men, of a day, ... $2 25 $1 13 



1 horse, $ of a day, . 1 50 25 



10 pounds disparene, . 



Gas, . . 32 



Total, . $2 90 



"With this outfit 8 tanks can be used per day under good conditions, 

 a tube of gas usually being sufficient for 9 tanks. The cost of spraying 

 in the work under observation was slightly more than 22.3 cents per 

 tree. 



