insecticidal studies. In laboratory work with liquid sprays, Volck 
oil at 1 and 1.-5 percent actual oil, nicotine sulphate, and a white oil 
extract of pyre thrum proved the most effective in killing the eggs and 
"oung larvae after they emerged from the eggs • Nicotine sulphate alone 
was much more effective in killing eggs in the "black spot stage and just 
emerged larvae than was nicotine sulphate with resin fish-oil soap added 
(p. 750). 
In laboratory tests with several nicotine dusts, a much greater- 
kill of the eggs and young larvae we,s obtained when the twigs were dusted' 
while wet. This is thought to have been due to the adherence of more 
dust to the wet than to the dry foliage. Pield tests were made with nico- 
tine sulphate (1:800), applied 5 times, but there seems to have "been 
little control. Tobacco dust was also used in this study (p. 750). 
STEARNS, L. A. • (17,30) 
1928. THE ORIENTAL FRUIT I.-IOTH ( LASPEYRSSIA MOLESTA 3USCK) . Ohio Agr. 
Expt. Sta. Bimonthly Bull. 13 (2): 35-43, illus. [Abstract in Rev. 
Appl. Ent. (A) 15: 456. 1928.] 
Extensive laboratory and orchard spraying tests indicate 
that nicotine as an ovicide will partly control the oriental fruit moth. 
DRIGGSRS, 3. P. (1731) 
1929. ORIENTAL PEACH MOTH INVESTIGATIONS. N. J. Agr. Expt. Sta. Rept. 
1927-23, pp. 145-154. [Abstract in Rev. Aopl. Ent. (A) 17: 559-570. 
1929.] 
ITicotine sulphate alone was much more effective in killing eggs 
of the oriental peach moth ( Grapholitha molesta Busck) in the black spot 
stage and newly hatched larvae than with the addition of resin fish-oil 
soap. Of the dusts, one containing 1 percent nicotine was best. A count 
of infested twigs showed an average of 3 and 3.4 percent injured twigs on 
trees sprayed with Volck and nicotine sulphate respectively. Against 
the third generation eggs and larvae, neither Volck, ground tobacco dust, 
nor nicotine sulphate was sufficiently successful to warrant more ex- 
tensive tests. 
GARMAN, P. (1732) 
1929. THE ORIENTAL PEACH MOTH. Conn. Agr. Expt, Sta. Bull. 305, pp. 
731-734, illus. [Abstract in Rev. Appl. Ent. (a) 17: 510. 1939.] 
One percent white oil emulsions combined with various contact 
poisons were more effective than, nicotine-soap combinations. 
HAEUSSLER, G. J. (1735) 
1929. THE ORIENTAL PE^CH MOTH, peninsula Hort. Soc. [Del.] Trans. 1929, 
pp. 80-86. [Abstract in Rev. Appl. Ent. (A) 17: 388-389.' 1939.] 
