- 392 - 
In an attempt to discover a material harmless to man and as ef- 
ficient as lead arsenate in sprays against the codling moth, several 
substances were applied- four times. TJhite oil alone (1:64) gave as good 
control (nearly 98 percent) as lead arsenate. Combinations of oil (1:80) 
with nicotine sulphate (1:640) were slightly more efficient, but much 
more expensive . 
L0CKW00D, S. (1677) 
1933. A REVIEW OF CODLING MOTH CONTROL MEASURES. Calif. Dept. Agr. 
Monthly Bull. 22 (2-3): 170-178. [Abstract in Rev. Appl. Ent. (A) 
21: 595. 1933.] 
For those with equipment for washing their fruit, it is recom- 
mended that the lead arsenate in the seoond cover spray be reduced from 
3 to 2 lb. per 100 gal., followed on late-ripening fruits by a third 
cover spray of 3/4 pt . nicotine sulphate and 1 gal. oil in 100 gal. 
water (Rev. Appl. Ent. (A) 19: 544). Where the f raits are only to be 
wiped, oil-nicotine should be used for the second cover spray also. 
MOORE, Wm. (1678) 
1933. A NEW DEVELOPMENT IN THE FIXATION OF NICOTINE. Jour. Econ. Ent.' 
26 (3): 723-726. [Abstract in Rev. Appl. Ent. (A) 21: 474-475. 1933.] 
Attempts to prevent the dissolving away of nicotine t annate on 
sprayed fruit and foliage have failed, but a new insoluble nicotine 
insecticide has now been prepared by heating an aqueous solution of 
nicotine, resorcinol and formaldehyde. A finely divided precipitate 
is obtained. The washed, air-dried product contains about 22 percent 
nicotine, which dissolves in water to the extent of 0.004 g. in 100 
cc. as against 0.015 - 0.02 g. of the nicotine in nicotine tannate. 
Prepared as a paste, the new material was mixed with oil and applied 
to apples by dipping. Its toxicity to the codling-moth larvae was 
about equal to that of nicotine tannate, and the deposit left by it 
was about twice as resistant to washing with water. 
NEWCOMER, E.J., ROLFS, A. R. , and DEAN, F.P. (1679) 
1933. A PRACTICAL TEST OF CHEMICALLY TREATED BANDS FOR THE CONTROL OF 
THE CODLING MOTH. Jour. Econ. Ent. 26: 1056-1058. 
In the spray schedule, nicotine sulphate (1:1,200) plus oil 
emulsion was used for the last two sprays, but no results are stated. 
OVERLEY, F. L., OVERHOLSER, E. L., and ST. JOHN, J. L. (1680) 
1933. WASHING EXPERIMENTS IN 1933 T7ITK SPECIAL REFERENCE TO NEW SPRAYS. 
Wash. State Hort. Assoc. Proc. 29th Ann. Meeting, pp. 79-85. [Abstract 
in Chem. Abs. 28: 4529. 1934.] 
Spray residue removal was complicated by the use of nicotine 
sulphate-mineral oil combinations for second brood sprays following 
