BIBLIOGRAPHY OF ECONOMIC ENTOMOLOGY. 
17 
227. Clarke, W. T. The potato-worm in California. <Bull. No. 135, 
Calif. Agric. Exp. Sta., October, 1901, pp. 30, 10 figs. 
Treats of Gelechia operculella Zell.; also of Epitrix hirtipennis Mels, and Steno- 
pelmatus sp. 
228. Clarke, W. T. The peach worm. <Bull. No. 144, Calif. Agric. 
Exp. Station, September, 1902, pp. 44, 20 figs. 
Treats of Anarsia lineatella Zell. 
229. Clarke, W. T. The lime, sulphur, and salt wash. <Pacific 
Rural Press, 7 March, 1903. 
230. Clarke, W. T. The black peach aphis in California. <Pacific 
Rural Press, 13 June, 1903; 20 June, 1903. 
231. Clarke, W. T. Spraying operations for the codlin moth in the 
Paiaro Valley. <Pacific Rural Press, 26 December, 1903, 
pp. 404-4:05. 
232. Clarke, W. T. Aphids attacking the apple. <Pacific Rural 
Press, 17 December, 1904, p. 388. 
233. Clinton, L. A. The Hessian fty epidemic. <Countiy Gentle¬ 
man, 8 November, 1900, p. 909. 
234. Close, C. P. Plant diseases and insect pests. <Bull. No. 65, 
Utah Agric. Exp. Station, February, 1900, pp. 39-95, 6 pis., 
5 figs. 
235. Coburn, W. S. My treatment and success with codling moth. 
<Ann. Rept. Colorado State Board Hortic. f. 1901 (1902), 
pp. 78-82. 
236. Cockerell, T. D. A. The cottonwood web-worm (Hyphantria). 
<Press Bull. No. 35, New Mexico Agric. Exp. Sta., May, 
1900, 1 p. 
237. Cockerell, T. D. A. Economic entomology in Arizona. <Sci- 
ence-Gossip, May, 1900, pp. 366-367. 
Notes on Aleurodes mori Quaint., Dlcraneura cockerelli Gill., Typhlocyba vul- 
nercitci (Fitch), Lecanium robiniarum (Dougl.), and Melanoplus olivaceus 
Scudd. 
238. Cockerell, T. D. A. The danger of introducing insects on trees. 
<Bull. No. 34, Ariz. Agric. Exp. Sta., June, 1900, pp. 82-84. 
239. Cockerell, T. D. A. Winter remedies for injurious insects. 
<Bull. No. 34, Ariz. Agric. Exp. Sta., June, 1900, pp. 87-88. 
240. Cockerell, T. D. A. Observations on insects. <Bull. No. 35, 
New Mexico Agric. Exp. Sta., October, 1900, pp. 27, 10 figs. 
Notes on a number of species, 
241. Cockerell, T. D. A. Notes on the food of birds. <Bull. No. 
37, New Mexico Agric. Exp. Sta., March, 1901, pp. 35-51. 
Notes on insect food of various birds. 
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