11.; GYPSY AND BKOWN-TAIL MOTHS. [Jan. 



a minutes to transfer the water from the barrels to the spray tank. 



The insecticide was Swift's arsenate of lead, 10 pounds to 100 gallons 

 of watt-!-. 



Cost. 



1 foreman, A day, ... . . S3 00 SI 50 



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



1 engineer, ^ day, . 2 40 1 20 



4 iiii-ii. \ day. . . . 2 25 4 50 



1 man, day . . 2 00 1 00 



200 pounds arsenate of lead, . . 12 24 00 



2 gallons gasoline, ...... 18 36 



Oil, grease and waste, ........ 05 



Total, . . S34 86 



The cost of this spraying was $S.71 per acre for trees and brush, or 

 slightly less than 3 cents per tree. Seven tanks or about 2,000 gallons 

 of spray were applied during one-half day, poison being used at the 

 rate "-f .',11 pounds per acre. 



MEDFORD, JUNE 25, 1907. 



Here the work consisted of spraying street trees and those on private 

 i-tates in the residential section of West Medford. Nearly all the 

 trees were along the road, and averaged 55 feet in height. All told, 73 

 trees were sprayed with 10 pounds of disparene to 100 gallons of water. 



Outfit. 



The outfit was made up from a 5 horse-power Church engine, a 

 triplex pump and a 400-gallon tank. The line of l^o-inch hose of 

 varying length, to which was attached a SHc-inch nozzle, was used. It 

 was necessary to move the outfit frequently, with a consequent increase 

 in the cost of work. 



Cost. 



1 foreman, | day, ... $3 00 SO 75 



1 engineer, } day, . . . . 2 50 63 



~ men, ', day, . 2 25 3 94 



1 t! am and driver, ^ day, . 5 00 1 25 



Ki pounds disparene, . rj 4 80 



1 Ballon gasoline, . 20 20 



' il. greasr and waste, . 05 



Total. . $11 62 



Avera-je i-o-t of trr.-itineiit. 10 cents per tree. 



BEADING, JI-XE 28, 1907. 



The woodland in the northern part of the town was being treated by 

 a power outfit on this dale. The trees were principally oak, mixed 

 with a few pine and other species, and averaged 50 feet in height. One 



