NICOTINE SULPHATE AS AN OVICIDE AND LARVICIDE. 19 



LITERATURE CITED. 



<1) [De Sellem, F. E.] 



1916. Nicotine sulfate for codlin moth control. In Ann. Rept. Hort. 



Dept., Yakima Co., Wash., p. 62-72. 



(2) Eaton, J. S., and Waterbury, H. E. 



1917. Codlin moth experimental work in Ross orchard. In Ann. Rept. 



District Hort. Inspector, Yakima Co., Wash., p. 27-42. 



(3) Feytaud, J. 



1912. Action des insecticides sur les ceufs de la cochylis et de l'eudemis. 

 In Bui. Soc. d'Etude et de Vulgarisation de la Zool. Agr., Bor- 

 deaux, p. 1-20. 



(4) Lovett, A. L. 



1917. Nicotine sulphate as a poison for insects. In Jour. Econ. Ent., v. 



10, no. 3, p. 333-337. 



(5) 



1918. Nicotine sulphate an effective ovicide for codling moth eggs. Notes 



in Jour. Econ. Ent., v. 11, no. 1, Feb., p. 149-150. 



(6) McIndoo, N. E. 



1916. Effects of nicotine as an insecticide. In Jour. Agr. Research, v. 7, 



no. 3, p. 89-122, 3 pi. 



(7) Moore, William, and Graham, S. A. 



1917. A neglected factor in the use of nicotine sulphate as a spray. In 



Jour. Agr. Research, v. 10, no. 1, p. 47-50. 

 <8) Packard, A. S. 



1903. A text-book of entomology. New York. 

 (9) Safro, V. I. 



1917. How to test for the presence of nicotine on sprayed plants. In 

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