- 387 - 
The addition of 1 percent medium or light grade summer oil with 
40-percent nicotine sulphate (1:1200) and calcium caseinate to the 
3d, 5th, and 7th sprays in the standard lead arsenate spray program 
gave satisfactory control of severe infestations of the woolly aphids 
(Eriosoma lanigrerum Hausm.) , Similar sprays containing more nicotine 
sulphate (1:800), calcium caseinate, and no oil gave equally good 
results .and improved the control against the codling moth. A pro- 
gram of double strength lead arsenate with a spreader, in which nico- 
tine sulphate (1:800) was added in the 3d spray to control the 
woolly aphid, gave almost as good results against the codling moth as 
the standard one with 1 percent medium grade oil and spreader added to 
the 3d, 5th, cond 7th sprays, and nicotine sulphate (1:1,200) added to 
the 3d and 5th. 
QJJAINTANCE, A. L., et al. (1658) 
1931. REPORT OF COMMITTEE TO EORMUTATE PLANS FOR INVESTIGATIONS OF THE 
CODLING MOTH FROM BIOLOGIC AND CONTROL STANDPOINTS. Jour. Econ. Ent. 
24 (1): 18-23. 
Reports on oil-nicotine "by Spuler, Sherman, Newcomer, Haseman, 
Ackerman, Gilmer, Flint, Davis, and Thompson are given. Some of 
these investigators say that the oil-nicotine combination gave results 
equal to those obtained with lead arsenate, while others did not get 
such good results (p,20) . Favorable reports on nicotine tannate by 
Headlee, Spuler, Newcomer, Stearns, and Lothrop and Sazama are also given 
(p. 21). 
REGAN, T7. S. (1659) 
1931. RESULTS OF INSECTICIDE TESTS FOR THE CONTROL OF CODLING MOTH AND 
OBSERVATIONS ON CODLING MOTH ACTIVITY DURING THE SEASON OF 1930 IN 
THE YAKIMA VALLEY, T7ASH. 22pp. Berkeley, Calif. [Abstract in Rev. 
Appl. Ent. (A) 19: 632. 1931.] 
Nicotine sulphate (40-percent) with the oil instead of lead 
arsenate in late sprays gave sufficiently good control to indicate 
the possibility of using this material where residue removal is a 
serious problem. 
SHERMAN, F. (1660) 
1931. RECENT EXPERIMENTAL T70RK ON CODLING MOTH. Mich. State Hort. Soc. 
Ann. Rept. 60: 48-50. [Abstract in Biol. Abs. 6 (5): 1423, Entry 
13,859, 1932.] 
One application of oil and nicotine on strawberry 'apples for 
summer brood larvae gave better control than a single applcati'on of 
lead arsenate. Apples treated with lead arsenate had an excessive 
arsenical residue, while those treated with oil and nicotine showed 
less than the world's tolerance. Oil-nicotine is not effective on 
late varieties when applied as, a substitute for lead arsenate at the 
times indicated in the spray calendar for spraying with lead arsenate. 
Sunoco oil used at rate of 1 gal. with 3/4 pt. nicotine sulphate to 100 
gal. of water is unsafe on apples. 
