- 576 - 
Jassids causing a type of leaf brown in Montreal include Cicadu l 
sexnotata Fall.; Helochara c ommuni s Fitch; Empoasca fa"bae Harr. ( mali 
and Parabolocratus viridis Uhler. The "best remedy is bordeaux mixture 
used as a repellent. A dust of precipitated sulphur and nicotine has 
proved slightly less successful but is useful on plants nearly ready f 
market as the dust is readily removed by washing with water. 
ANONYMOUS (2412) 
1927. APKIDS AND JASSIDS ATTACKING COTTON. S. and E. African Agr. Coi 
Proc. 1926, pp. 173-174; 180-181. [Abstract in Rev. Appl . Ent. (A) 
15: 564. 1927.] 
Nicotine dust if applied at sufficient strength is toxic to the 
jassid, Empoasca ( Chlorita ) facialis Jac. but bordeaux mixture either 
as a dust or spray is the only substance giving lasting results. 
HEADLEE, T. J. (2413) 
1922. REPORT OF THE DEPARTMENT OF ENTOMOLOGY 1920-21. N. J. Agr. Expj 
Sta. Rept. 1920-1921, pp. 351-408, illus. [Abstract in Rev. Appl. Er 
(A) 10: 609-610.] 
Nicotine impregnated dusts destroy a high percentage of the oat 
aphid ( Siphonaphis padi ) and apple leafhopper ( Empoasca mali ) . 
RUGGLES, A. G., and EYER, J. R. (2414) 
1923. PRELIMINARY NOTES ON THE LIFE-HISTORY AND CONTROL OF THE POTATO 
LEAF -HOPPER, EMPOASCA KALI , LSB . Minn. State Ent., 19th Rept . 
1921-1922, pp. 10-14." [Abstract in Rev. Appl. Ent. (A) 12: 55. 1924 
Bordeaux mixture was not very effective in the dust form either 
alone or in combination with a nicotine dust. 
ANONYMOUS . (2415) 
1924. ENTOMOLOGY AND PARASITOLOGY. Calif. Agr. Sxpt. Sta. Rept. 
1923-1924, pp. 37-39, 42-43. [Abstract in Rev. Appl. Ent. (A) 13: 49 
1925.] 
Calcium cyanide dust and nicotine dust have been utilized 
particularly as a means of killing the adults of the grape leafhopper, 
Erythroneura comes Say, in early spring. 
ROSS, T7. A. (2416) 
1924. MISCELLANEOUS NOTES ON GRAPE LEAFHOPPER CONTROL. Ontario Ent. Soe. 
54th Ann. Rept. (1923), pp. 24-26. [Abstract in Rev. Appl. Ent. (12)1 
534. 1S24.] 
Newly-laid eggs of the grape leafhopper ( Erythroneura comes ) were 
less susceptible to nicotine than those over 8 days old. Nicotine duct 
proved unsatisfactory as an ovicide, but the addition of lime apparently 
