- 532 - 
E riosoma lanigerum Hausm. the woolly aphid, may "be satisfactory 
controlled "by a spray made as follows: 1 lb. soap is "boiled in 1 gal 
water until dissolved, to this 1 gal. of red oil is added and when 
thoroughly mixed also 1 pt . nicotine sulphate. TJaen the whole is wel 
mixed 80 gal. water are added and, if the water is hard, a small piec 
washing soda. 
K9YT, L. P. (2206) 
1924. NICOTINE SOAPS. Indus. andEngin. Chem. 16: 1171-1172. [Absti 
in Chem. Abs. 19: 697. 1925.] 
Coconut-oil nicotine soap was superior to nicotine soap made 
with oleic acid and castor oil in lathering power and spreading 
power. At 1 to 500 in s©ft water both the coconut oil and oleate 
products proved very effective against green apple aphid, woolly 
aphid and cabbage aphid. 
SIEGLZR, E. H., and POPENOE, C. H. (2207) 
1924. SOME INSECTICIDAL PROPERTIES OP THE FATTY ACID SERIES. Jour. 
Agr. Res. 29: 259-261. [Abstract in Chem. Abs. 19: 1174., 1925.] 
Patty acids from coconut oil compared favorably with a commerce 
nicotine preparation in killing the black chrysanthemum aphid. 
ALLEN, 77. J., and BRERETON, XI. LeG. (2208) 
1925. ORCHARD NOTES. Agr. Gaz. N. S. Wales 36 (7): 525-531. 
Last year the Victorian Department of Agriculture tested and 
found the following spray very effective for the woolly aphid: 1 gal. 
red oil, 1 pt . 40-percent nicotine sulphate, 2 lb. soap, and 80 gal. 
water. Both 40-percent nicotine sulphate and tobacco wash combined 
with lime-sulphur 10 years ago kept trees clear of woolly aphids 
longer than did either one alone, but a recent test did not confirm 
this. Another woolly-aphid spray consists of 1 lb. caustic soda, 3/4 
pt. 40-percent nicotine sulphate, and 100 gal. water and is to be ap- 
plied before the treas start in the spring (pp. 530-531). 
ROSS, XI. A. (2209) 
1925. LUBRICATING OIL SPRAYS T7TTH SPECIAL REFERENCE TO THEIR USE ON 
PSYLLA. Fruit Growers' Assoc. Ontario, 57th Ann. Rapt., pp. 77-81. 
[Abstract in Rev. Appl. Ent. (A) 15: 68. 1927.] 
Spraying for the control of the pear psylla ( Psylla pyriqola 
Fo'rst . ) is done more economically with 3 percent lubricating oil spray 
than with lime-sulphur or nicotine sulphate. 
I/IAIIGILL, R. H. (2210) 
1926. DETERRENT SPRAYS FOR PEAR-MIDGE. Jour. Dept. Agr. New. Zeal. 32 
311-315. 
