Php Soe 
windward side and 39 on the leeward side; of the glassy-winged sharp- 
shooter (Homalodisca triquetra Fab.), 2,031 on the windward side and 
5,985 on the leeward side; and of Oncometopia undata Fab., 193 on the 
windward side anit S49 on the leeward side. Of the 14 species of ine 
sects being studied only one, Stictocephala festina Say, was taken in 
larger numbers on the windward side than on the leeward side, 54 on 
the windward and 33 on the leeward side of the screens," 
INSECTS AFFECTING MAN AND ANIMALS 
Under the auspices of local civic bodies a mass meeting was held 
in Savannoh, Ga., on April 10, at which o discussion of mosquito and 
sand fly problems took place. About 800 interested citizens of Savannah 
anil Chatham County attended the meeting, which was addressed by the 
Hon. Thomas Gable, Mayor of Savannah, Dr. Victor H. Bassett, Health 
Officer of Savannah and the County of Chatham, W. E. Dove, and F. OC. 
Bishopp. The Department motion picture on mosquitoes was shown. The 
interest in continuing the mosquito and sand fly control operations, 
which have been going on for several months under the auspices of the 
CWA, was manifest, and efforts are being made to provide for their con- 
tinuance. 
Survey of surgical maggot production.—~S. W. Simmons, of the Bu- 
reau's Washington, D. C., laboratory, made a field trip curing the 
period April 11 to 14 for the purpose of investigating the commercial 
production of surgical maggots and maggot production as practiced in 
hospitals. The points visited were New York City, Pearl Rives, N.W.; 
ani Newark, N. J, At the present time only one commercial company 
(located at Pearl River) is engaged in selling maggots. Their business 
has declined considerably and for that reason the officials of the com- 
pany were of the opinion that the use of maggot therapy was decreasing, 
A survey made by our own laboratory, however, reveals the fact that the 
maggot treatment is crowing rapidly, having spread to every State in 
the Union and to several foreign countries. The decrease in the number 
of sales is, no doubt, due to the excessive price of $6 per bottle 
(enough for one implantation only), which is charged. Many hospitals 
that formerly purcnasec their maggots are now producing their own at 
much less expense. 
Tobacco oils effective arainst fleas and ticks on fowls.--In an 
earlier number of the Monthly Letter a report was made concerning pre- 
liminary tests of certain tobacco oils in control of the sticktight flea 
(Echidnophaga gallinacea Westw.) and the fowl tick (Argas miniatus Koch). 
During April field tests of these oils have been conducted. The results 
Closely approximate those obtained in the laboratory, which were quite 
promising. While there has not been enough of some of the materials 
available to make extensive field tests, some practical tests have been 
made and it is indicated that the tobacco oils are quite useful in con 
trol of the stickticht flea and the fowl tick. The advantage of these 
. 
