152 GYPSY AND BROWN-TAIL MOTHS. [Jan. 



Cost. 



\ men, i .lay, . . S2 00 S4 00 



1 horse and driver, i day, . . . . . . 3 00 1 50 



24 pounds arsenate of lead, . . ... 12 2 88 



Total, . SS 38 



Average cost of treatment, about 23 cents per tree. 



LEXINGTON, JULY 4, 1907. 



A stern hillside, covered with a mixed growth of about 250 trees 

 from 40 to (iO feet in height, was sprayed on this date with 

 the twu hand outfits previously mentioned. 



Cost. 



1 foreman, 1 clay, . . . S3 50 S3 50 



limbers, 1 day, . 2 25 11 25 



1 climber, $ day, . 2 25 1 13 



3 men, 1 day, . . '2 00 6 00 



120 pounds arsenate of lead, ... . . 12 14 40 







Total, S3G 28 



Average cost of treatment. ]4.5 cents per tree, or $36.28 per acre. 



GLOUCESTER, JULY 5, 1907. 



A private estate covering between 4 and -3 acres, with numerous 

 walks and drives, was treated. All told, 60 tall shade trees aver:r_ 

 SO feet in height, and 100 tall shade trees from 25 to 50 feet in height, 

 were climbed and sprayed. Those were scattered over l 1 ^ acres of 

 -round. In addition. ' _> acre of underbrush was sprayed. The trees 

 were mainly pine, beech, and red and white oaks. 



Outfit. 



The Niagara -as engine, with a 100-gallon tank connected with line- 

 of IIM-C iind with simile Yermorel nozzles, was used. The pressure 

 raiejeil fn.in lid to 125 pounds. 50 pounds of gas being- required per 

 day. This amount was si ! to e\pi>] 5(10 gallons of poison. Dis- 



parenr \v;is applied at the rate of 15 pounds to 100 gallons of water. 



Coy I. 



1 fun-mat], 1 \ days, . . . 50 S3 7.") 



:: men, .... -j 25 10 13 



1 bone, I ' <la- . . . 2 00 3 00 



!" mm Is nas, . . 50 3 7.". 



1 I:: |.iiiinds disparrt . 11 12 -I.". 



Total. . . . . S33 06 



Avei ment, 20. r> cents pei- tree, or $16.53 per acre. 



