1908.] PUBLIC DOCUMENT No. 73. 149 



Cost. 



1 foreman, day, $2 50 $1 25 



4 men, \ day, 2 25 4 50 



1 horse, \ day, . 1 50 75 



1 water wagon and team, \ day, 5 00 2 50 



20 pounds arsenate of lead, . 12 2 40 



Total, . $11 40 



Average cost of treatment, 7.6 cents per tree. 



MALDEN, JULY 1, 1907. 



In Pine Banks Park on this date there were sprayed 160 hardwood 

 trees of mixed growth averaging about 25 feet in height, and some 2 

 acres of sprout and brush land in which the trees stood. About 25 per 

 cent, of the trees were climbed. 



Outfit. 



A single-cylinder hand pump, connected with a 100-gallon tank and 

 3 lines of ^/o-inch hose, equipped with Bordeaux nozzles, completed the 

 outfit. Arsenate of lead at the rate of 10 pounds to 100 gallons of 

 water was used. 



Cost. 



1 foreman, day, . $2 50 $1 25 



4 men, \ day, ... . 2 25 4 50 



1 horse, day, .... . 1 50 75 



1 water wagon and team, \ day, . . . 5 00 2 50 



25 pounds arsenate of lead, . . . . 12 3 00 



Total, . . $12 00 



Average cost of treatment, 7.5 cents per tree. 



ARLINGTON, JULY 2, 1907. 



An infested Avood lot, in which pines represented one-third and mixed 

 hardwood growth two-thirds of the number of trees, ranging from 30 

 to 50 feet in height, was treated during four successive days. It was 

 necessary to climb 80 per cent, of the trees. During the spraying 

 operations 1 acre of undergrowth among the trees and 3 acres of brush 

 land and sprout land were sprayed. Water could only be obtained at 

 a considerable distance, and about one-third of the time was spent in 

 hauling it. 



Outfit. 



A 2 horse-power Olds gasoline engine, with double-acting pump and 

 300-galJon tank, composed the outfit. Five lines of V2-mch hose, with 

 8-foot extension rods and Bordeaux nozzles, were used. Arsenate of 

 lead was applied at the rate of 15 pounds to 100 gallons of water. 



