156 (JVl'SV AND IHJOWN-TAIL MOTHS. [Jan. 



wa- alioui :;()'_. acres. the trees averaging about 100 per acre and 

 ran-in'-: 1 nun iln to 40 feet in height. The growth was principally oak, 

 with other species of hardwood intermingled. But few trees were 

 climbed. Water was haiik'd in one of the city sprinkling carts. 



Outfits. 



Kadi of the two uiitlits consisted of a 4 l /z horse-power Olds gasoline 



mi-, a double-act hit: pump and a 300-gallon tank. A single line of 



Tj-indi hose equipped with a %c-inch nozzle applied the spray, which 



contained arsenate of lead at the rate of 14 pounds to 100 gallons of 



water. The pressure was quite uniformly at 1 '_'.") pounds. 



Cost. 



2 enjrinrrrs, H days, . S2 40 $7 20 



12 men, 1$ days, 2 25 40 50 



1 man, H days, . . . 2 00 3 00 



2 tam~ ami drivers, 1$ days, . 5 00 15 00 

 1 water team and driver, 1-J days, . . . . 5 00 7 50 

 5 gallons gasoline, ..... . 20 1 00 



1,152 pounds arsenate of lead, . . . . 11 126 72 



Oil, grease and waste, ........ 20 



Total, . . S201 12 



Average cost of treatment, about 5.5 cents per tree, or $5.51 per acre. 



LYNN, JULY 13, 1907. 



S|p|-.i\in- operations in Lynn Woods Park. During the period this 

 out lit was under observation (i pines ranging from 60 to 75 feet in 

 height and a small amount of undergrowth were treated with 200 gallons 

 of poison, carrying arsenate of lead at the rate of 15 pounds to 100 

 i:alloiis of water. 



Outfit. 



The outfit consisted of a 2 1 2 horse-power Olds gasoline online, a 

 doiililc-acting pump and a 300-gallun tank. Three lines of 1 o-inch hose 

 1 1 -i -i I. and .'! of the trees were climbed. 



Cost. 



1 enuinrrr, day, . . $_ 40 $0 40 



i men, jt day. 2 LV. 1 50 



1 Irani and driver, f, day, . . 5 00 83 



.'in pounds arsenate of lead, . 1 1 3 30 



i gallon gasoline, ... . 20 10 



Total, . . . ?G 13 



Average cost of t re;il inent . .^l.O'J per tree. This work was done under 

 jre.-it dillicultie-.. chief of which \\ere defective pressure oil the pump 

 and In-- of time in 



