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DAVIS, J. J. (2197) 
1922. BISECT PROBLEMS IN INDIANA DURING 1921. Jour. Econ. Ent. 15: 
277-282. [Abstract in Rev. Appl . Ent. (A) 10: 530-531. 1922.] 
Nicotine sulphate (l oz. to 5 gal. water containing 1 lb. fish 
oil soap) seems preferable to nicotine oleate at the rate of 1 oz. to 
gal. for the control of immature of such scales as the cottony maple 
scale, ( Pulvinaria vitis ), oyster-shell scale, ( Lepidosaphes ulmi ), 
and the San Jose scale, (Aspi diotus perniciosus ) . 
WALLACE, F. N., et al. . (2198) 
1922. REPORT OP THE DIVISION OP EET0M0L0GY. Ind. Dept. Conserv. 3d 
Rept. 1920-21, pp. 37-57. [Abstract in Rev. Apnl. Ent. (A) 10: 311 
•1922.] • 
Against the whit of ly ( Aleurodes ) nicotine oleate has been used 
successfully. It is prepared by mixing 1 3/4 pt . of commercial or 
technical oleic acid or "red oil" with 2 l/2 pt. of nicofurae liquid, 
1 fl oz. of this mixture being used to 2 gal. of soft water. Sprayin 
with 1 part Black Leaf 4-0 to 500 parts water, with 1 oz. fi-sh-oil 
soap to each gal. water, or with 1 fl. oz. nicotine oleate to 2 gal. 
is effective against the chrysanthemum midge (Diarthronomyia hypogaea 
Nicotine oleate will also control mealybugs ( Pseudococcus ) and greenh 
orthezia ( Orthezia insignis) . Remedial measures recommended for the 
midge ( Neocerata rhodophaga ) include nightly fumigation with nicotine 
papers or tobacco stems for two to three weeks, keeping the benches 
covered with 1/4 to l/2 in. tobacco dust, which must be renewed as it 
comes wet . Nicotine oleate and tobacco dust have given fair results 
against the cyclamen mite ( Tarsoncmus pallidas ) . 
HARTZSLL, A., and LATHROP, P. H. (2199) 
1925. AN INVESTIGATION OP SULPHUR AS AN INSECTICIDE. Jour. Econ. Ir.t 
267-279, illus. [Abstract in Rev. Appl. Ent. (A) 13: 332-333. 192 
To test the effect of adding a small amount of nicotine oleate 
12 cc. of oleic acid and 20 cc. of nicotine were dissolved in 200 cc. 
water and then combined with 100 cc. of the stock solution. At a dil 
tion of 1 to 40 the combined emulsion killed 97 percent of Psylla pyr 
and no foliage Injury was caused to the pear trees sprayed. 
SNYDER, T. E. (2200) 
1926. PREVENTING DAMAGE 3Y TERMITES OR T7HITE ANTS . U. S. Dept. Agr.j 
Farmers' Bull. 1472, 22pp., illus. [Abstract in Rev. Appl. Ent. (. 
14: 409-410. 1926.] 
Kerosene nicotine oleate or 5 percent kerosene emulsion sprayei 
greenhouse staging, or, at night, on potted plants, effectively cont: 
termites. 
