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The following men have boon appointed as temporary field assistants and 
eSigned. to duty at Tallulah, La.: Messrs, D, C,. Barney CM, Beiokeik 7 ar 
Jickson, By OU; Hammett, A. a. Monette, J, W. Patterson Ez, 3. om aie Smith 
@eeemath, C, G, Wallace, Ae 1a < Williamson, arnt We. Gg Young, . 
temporary field assistants and as- 
The following men have been appointed as 
Charles M, Barrett, Caleb P, Daley, 
TT. Lewis, Jey, uy -b. Ma cQueen, George 
d-to duty at Clark sville, Tenn,: Messrs, 
i. FP, Grubbs, J. W, Hi11, if u gudeali. J, 
B, Pearson, mee, Rogers, A, L, Spencer, T, P, Weakloy, 
feo. G. Hy, Lemson, Jr., has been appointed as a collaborator in the in= 
Vestigation of Pediculus with Special rogard to vacuum fumigation at Buston,Mass, 
z Mr, S, H, Livingston has been appointed a temporary ficld assistant and 
asSigned to mosquito work at Mound, La, | 
FOREST ENTOMOLOGY, 
A, D, Hopkins, Forest Entomolozist, 
- Messrs, Craighoad and Hcinrich have returned from the trips reported in 
the last News Letter and report.dot only very instructive studies but much of 
them very useful in the presont National emergency. 
PREMENTSHG) SPREAD OF MOTHS. 
4A, FP, Burgess, Entomologist in Charge. 
The annual field day and meeting of the Massachusetts Tree Wardens and 
Poresters Association was held on the llth and 12th of July, 1918, under the di- 
meecton of Mr. L, 4, Worthley, President of the Association. 
The first session was held at the Gipsy Moth Laboratory, Melrose High- 
lands and members of the Association, together with visitors from New York, 
Rhode Island, Connecticut, Vermont, Maine and Canada, about 125 in all, inspect- 
ed the experimental work which is being carried on by the Bureau of Brtomolesy 
U. S. Department of Agriculture, 
An opportunity was given to see tho mothod of rearing and handling the 
Gifferent parasites of the gipsy moth and the browntail moth which have been in- 
troduced from Europe and Japan, Explanations and demonstrations were given in 
sconnection with other important work such as the use of an improved material . 
for banding trees and the results of studics which have becn made on the feeding 
Miabits of the caterpillars and the preference for different kind of tree growth, 
“As most of the mombors of this Association are actively engaged in gipsy-moth ~ 
work, an exceptionally good opportunity was offered them to familiarize them- 
Bblves with the different species of beneficial insects which have been placed 
in the infested area, | 
They were also given an opportunity to witness a demonstration of the 
fork of the large motor truck sprayers used by the peau of Entomology for 
raying infested areas for preventing the spread of the gipsy as The spray- 
Which was used: was the latest model which has been built and is Sea pecs of 
Generating greater pressure and treating larger areas in a given time setae, 
shine previously devised, It is possible, with this machine, to send 5 Here 
ae through 4,000 feet of 1-1/8" hose at an elevetion of 800 feet, throwing 
| Stream 100 feet from the ground and thus reaching tne tallest trees and the 
highest hill-tops that occur in the infested area. 7 Pe 
After visitinga corrficld, heavily infested with Lae oe seat S ae 
Medford, Mass., where the habits of this insect and the method for mea 
were explained, by Mr. D, J, Caffrey, a tour was made through the Arno 
Arboretum, 
