1908.] PUBLIC DOCUMENT- -No. 73. 145 



SAUGUS, JUNE 21, 1907. 



The spraying operations in this case were along both sides of the 

 road leading from North Saugus to Wakefield. Here the infested 

 woodland had been thinned back to a distance of 100 feet on each side 

 of the road. Owing to steep grades, the 600-gallon tank was only filled 

 to about three-fourths of its capacity. Swift's arsenate of lead was 

 used, at the rate of 10 pounds to 100 gallons of water. The trees 

 ranged from 10 to 60 feet in height, with an average of about 50 feet. 

 They were mainly oak, pine, ash and walnut. 



Outfit. 



A 7 horse-power Olds engine, coupled to a double-acting pump and 

 connected with a 600-gallou tank, was the essential feature of this 

 outfit. A single line of 100 feet of IVo-inch hose with a ^-inch nozzle 

 was used. About 2^ tanks were sprayed out during the morning, it 

 requiring about thirty-five minutes to empty the sprayer. There was 

 much loss of efficiency because of the time required to fill the tank. 



Cost. 



1 engineer, i day, 



1 team and driver, 4 day, . 5 00 2 50 



1 supply team and driver, \ day, 3 00 1 50 



6 men, } day, . 2 00 6 00 



113 pounds arsenate of lead, . 11 



2^ gallons gasoline, . 45 



Oil, grease and waste, . 05 



Total, . . $2433 



Average cost of treatment, about 20.6 cents per tree, or $12.16 per 



acre. 



STONEHAM, JUNE 21, 1907. 



The rough hillside off Franklin Street, covered with hardAvood trees 

 averaging 45 feet in height and running over 300 trees to the acre, 

 was sprayed by the local gang, under the supervision of Mr. George M. 

 Jefts. The trees were badly infested, and a part of them nearly de- 

 foliated at the time of spraying. 



Outfit. 



A 41/2 horse-power Olds engine, with double-acting Myers pump with 

 a 300-gallon tank, was used. A single line of lV 2 -inch hose, 400 feet 

 in length, with a %c-inch nozzle, was being operated. The average 

 pressure was 130 pounds, and a tank full was sprayed in about twenty- 

 five minutes. Water was hauled about % of a mile, the same team 

 being used to move the sprayer from one place to another. It required 



