- 538 - 
In the work against the walnut husk-fly ( Rhagoletis suavi s 
conrpleta Cress.), 64,000. lt>. of a 5 percent nicotine dust were applied 
with uniform success and no infested nuts were found in the treated 
area. 
7. Lepidop t era, 1922-1931 
ESSIO, E. 0. (2469) 
1922. KICODUST. Jour. Econ. Ent. 15 (3): 247. 
Nicodust composed of lime treated with 5 percent and the 40 
percent nicotine sulphate is proving very efficient in controlling 
young caterpillars , such as the leaf rollers, tent caterpillars, and 
cankerworms, "but it must "be used "before the worms are half -grown. 
FROST, S. TI. (2470) 
1931. SOME HABITS OE THE ADULTS OF THE ORIENTAL FRUIT MOTH UITH 
REFERENCE TO BAITS. Jour. Econ. Ent. 24: 302-309, illus. [Abstract 
in Rev. Appl. Ent. (A) 19: 361. 1931.] 
It was found that the "best method of determining the moth popu- 
lation of a tree was to dust it with a 4 percent lime-nicotine dust 
during the hottest part of the day and catch the falling moths (Las- 
P e yre si a molesta Busck) on a large white sheet "beneath it. 
ESSIG-, E. 0. (2471) 
1922. THE ARTICHOKE PLUME MOTH (PLATYFTILIA SP.). Calif. Dept. Agr. 
Monthly Bull. 11 (5-6): 454-456. [Abstract in Rev. Appl. Ent. (A) 
10: 470. 1922.] 
Among sprays that may prove effective in controlling the larvae 
is nicotine sulphate 3/4 pt. to 100 gal. with 5 lb. fish oil soap as a 
spreader. Dusts suggested for experiment include 5 percent and 10 
percent mcodust or nicotine dust. 
THEOBALD, F. V. (2472) 
1929. SOME NOTES ON INJURIOUS INSECTS AND OTHEH ANIMALS IN 1928. 
Jour. So. East. Agr. Col. No. 26, pp. 104-116, illus. (Kent). 
[Abstract in Rev. Appl. Ent. (A) 17: 675-576. 1929.] 
Dusting loganberries with a 2 percent nicotine gave good results 
against aphids (Maerosiphum rubiellum Theo.). The fly Sciara annulata 
Mg. can be controlled with strong nicotine and soap or with lead 
arsenate. The best spray to be used against the moth Plutella maculi - 
pennis Curt, consists of 4 oz. nicotine and 2 lb. lead arsenate to 80 
gal. water, but nicotine dust was still more effective. 
,1 
