December, ’23] 
CAMPBELL: NICOTINE DUST PROGRESS 
503 
the country, and that such manufactured dust will be used within a 
territory a few hundred miles from the factory. 
Such manufacturers will have the advantage of being able to sell 
cheaply to local trade and to make up an order and quickly send out 
freshly-made dust, thus largely eliminating the possible deterioration 
while in storage, and furthermore will be able to specialize on the type 
of dust best suited to their particular localities. 
BIBLIOGRAPHY 
1. McIndoo, N. E. Effects of nicotine as an insecticide. U. S. D. A. Jr. Agr. 
Research, v. 7, pp. 89-121, 1916. 
2. Essig, E. O. The pear thrips. Calif. Univ. Agr. Exp. Sta. Circ. 223, pp. 9. 
3 figs., Nov. 1920, Nicodust kills all exposed thrips. 
3. Capmbell, R. E. ' Circ. 154, U. S. D. A., Feb. 1921, Nicotine sulphate in a 
dust carrier against truck-crop insects. 15 p. 
4. Parrott, P. J. Jr. Econ. Ent., Vol. 14, No. 2, April 1921, pp. 206-214. 
Control of sucking insects with dust mixtures. 
5. Headlee, T. J. Jr. Econ. Ent., Vol. 14, No. 2, April, 1921, pp. 214-220. 
Dusting as a means of controlling injurious insects. 
6. Giddings, N. J., Jr. Econ. Ent., Vol. 14, No. 2, April, 1921. pp. 225-232. 
Orchard dusting vs. spraying. Discussion, pp. 232-238. 
7. Howard, W. L. Nicotine sulphate dust destroys certain crop pests in Cali¬ 
fornia. In Jour. Agr. California, v. 7. p, 30, May, 1921. 
8. Howard, W. L. Use of dust sprays in California. Ulus. In Better Fruit, v. 15, 
p. 3, June, 1921. 
9. Zimmerly, H. H., Geise, F. W., and Willey, C. R. Virginia Truck Exp. 
Sta. Buis. 35 and 36, April-July, 1921. Dusting vegetable crops, 
pp. 193-208. 
10. Horne, W. T., and Essig, E. O., Plant Disease and Pest Control. Calif. Sta. 
Ent. Cir. 227, Univ. of Calif., June, 1921, 69 p. Page 64-65. Nicodust 
and Combinations. 
11. Essig, E. O., Jr. Econ. Ent., vol. 14, No. 5, Oct. 1921, p. 392-394. Dust 
Insecticides in California. 
12. Morrill, A. W., Jr. Econ. Ent., Vol. 14, No. 5, Oct. 1921, p. 394-400. Notes 
on the use of insecticide dusts. 
13. Severin, H. H. P., Hartung, W. J., Schwing, E. A., and Thomas, W. W., Jr. 
Econ. Ent., Vol. 14, No. 5, Oct. 1921, p. 405-410. Experiments with a 
dusting machine to control the beet leafhopper, EutUtix tenella Baker, 
with nicotine dust. 
14. Smith, R. E., Calif. Agr. Exp. Bui. 336, p. 261-274, Nov. 1921. The prepara¬ 
tion of nicotine dust as an insecticide. 
15. Parrott, P. J., Glasgow, Hugh, and MacLeod, G. F., N. Y. Geneva Exp. 
Sta. Bui. 490, Nov. 1921. Control of apple red bugs by dusting. 
30 p., 4 pi. 
16. Moznette, G. F., Jr. Econ. Ent., Vol. 14, No. 6, Dec. 1921. p. 465-469. 
Dusting vs. spraying for the control of insect pests of the avocado. 
