- 584 - 
nicotine tannate' made from 3 Id. commercial tannic acid, 1 lb. 50- 
percent free nicotine, and 100 gal. water. 
HSADLEE, T. J., GINSBURG, J. I.:., and FIIHER, R. S. (1645) 
1930. SOME SUBSTITUTES FOR ARSENIC III CONTROL OF CODLING MOTH. Jour, 
Icon. Erit. 23': 45-53. [Abstract in Rev. Appl. Ent . (A) 18: 385-387. 
1930.] 
Nicotine tannate (3 lb. tannic acid to 1 pt . 50-percent nicotine 
sulphate) gave 73.2 percent fruit free from codling moth injury as 
compared with 57.5 percent from standard arsenical-treated rows. 
Trees treated with nicotine tannate were as well protected against 
the Japanese beetle as those treated with standard arsenical sprays 
and were very largely protected against injury from late broods of 
leafhoppers. 
KELSALL, A., HOCKEY, J. F., and ffAIEER, G-. ?. ' (1546) 
1930. EXPERIMENTS T7ITH NET? SPRAY MIXTURES. Pomol . Fruit Growers'.. Spc, 
36th Ann. Rept., Quebec 1929, pp. 26-37. [Abstract in Rev. Appl. 
Int. (A) 19: 473-474 . 1931.] 
With regard to sprays for apples, in pre-blossom applications 
as much as 1.5 lb. calcium arsenate, but after blossoming not more than 
0.75 lb. can be used, and in the last application 0.5 lb. nicotine sul- 
phate may be added. The addition of iron sulphate to lime-sulphur 
eliminates injury; used alone or with nicotine this mixture is a poor 
fungicide, preliminary tests with calcium monosulphide indicate that 
this is an effective and safe fungicide for use on apple trees that can 
be combined with lead arsenate, calcium arsenate, or nicotine sulphate. 
LEONARD, I!. D. (1647) 
1930. FURTHER EXPERIMENTS I7ITH NICOTINE-OIL FOR THE CONTROL OF THE 
CODLING MOTH IN THE PACIFIC NORTHWEST. J ur. Econ. Ent. 23: 61-75. 
[Abstract in Rev. Appl. Ent. (A) 18: 387-388. 1930.] 
Commercial scale tests are reported. In most dases 1/2 pt. of 
40-percent nicotine sulpha.te to 100 gal. was employed. A considera- 
tion of the comparative results indicated that nicotine-oil combina- 
tions undoubtedly give better results when used only in the last 2 
or 3 cover sprays than when used in all the cover sprays or in the early 
ones only. In most cases it is best to start the season with 1 or 2 
applications of lead arsenate (2 lb. to 100 gal.) followed by 2 of lead 
arsenate-oil, completing the schedule with 2 or possibly 3 applications 
oi nicotine-oil. This program appears to be the most efficient in con- 
trolling the major pests of apples and also the most economical from 
the point of view of net returns to the grower. 
NEI700MER, E. J., and SPULZR, A. (1548) 
1930. SUGGESTIONS FOR USE OF OIL SPRAYS IN 1930. Jour. Econ. Ent. 23: 
289-290. [Abstract in Chem. Abs. 24: 3311. 1930.] 
