BIBLIOGRAPHY OF COTTON BOLL WEEVIL. 28 



No. 234. Newell, Wilmon, 1908.— Boll weevil in Louisiana. <Farm & Ranch, vol. 

 27, No. 42, p. 7, October 17. 



Remarks on weevil conditions prevailing in Louisiana. Statement that present condi- 

 tions point to even more serious injury during 1909 than was experienced in 1908. Urges 

 the dcstraetion of cotton stalks as early as possible in the fall. 



No. 235. Newell, Wilmon, and Rosenfeld, A. H., 1909.— Report upon variety and 

 fertilizer experiments with cotton in the boll weevil infested sections of 

 Louisiana. <Cir. 26, State Crop Pest Comm. La., pp. 65-86, February. 



A report upon several experiments with different varieties of cotton and with the use of 

 different fertilizers in weevil infested regions of Louisiana; also a discussion of the futility 

 of late planting as a means of avoiding weevil injury. 



No. 236. Newell, Wilmon, 1909. — ^Miat constitutes a perfect stand of cotton when 



fighting the boll weevil. <Spec. Boll Wee\dl Bui. 1, La. State Board 



Agr. and Immig. (Cir. 25, State Crop Pest Comm. La.), 15 pp. 



Presents the results of several experiments to determine the effect on yield of planting 

 cotton with different spacing, in weevil infested territory. 



No. 237. Newell, Wilmon, and Dougherty, M.S., 1909.— The "V" cotton stalk cutter. 

 How to make it and how to use it.<Cir. 30, State Crop Pest Comm. La. 

 pp. 151-158, 4 figs., September 15. 

 Specification for building the "V" cotton stalk cutter and how to operate it. 



No. 238. Newell, Wilmon, and Dougherty, M. S., 1909.— The hibernation of the boll 

 weevil in central Louisiana. <Cir. 31, State Crop Pest Comm. La., pp. 

 163-219, 6 figs., October. 



An important contribution to the knowledge of the hibernation of the weevil, based 

 upon a large experunent carried out at Mansura, La., durmg the winter of 1908-1909. The 

 mportance of early fall destruction of the cotton plants is emphasized, based on the results 

 of the experiment. The following are the main divisions of the article: Time of entrance 

 Into hibernation; number of adults survixing the winter; emergence from hibernation; 

 length of time weevils live after leaving hibernation; comparison of climatological condi- 

 tions existing during this experiment with those normally existing in central Louisiana. 



No. 239. Newell, Wilmon, and Smith, G. D., 1909. — Experiments with powdered 

 arsenate of lead as a practical boll weevil poison. <Cir. 33, State Crop 

 Pest Comm. La., pp. 251-333, 4 figs. 



A detailed report on a number of experiments with powdered arsenate of lead carried out 

 during 1908 and 1909. Nearly all of the experiments show a marked increase in yield in 

 favor of the poisoned areas. The method of a{)plication as well as the number of treatments 

 is discussed. Emphasis is placed on the point that the use of this poison is only a supple- 

 mentary measure to the cultural methods. 



No. 240. Norden, A., & Co., 1909.— The boll weevil. <New York, 15 pp., 1 map, 

 February. 

 A statistical study of boll weevil damage. 



No. 241. North, S. N. D., 1904.— Quantity of cotton ginned in the United States 

 (crops of 1899 to 1903, inclusive). <Bul. 10, Bur. Census, U. S. Dept. 

 Comm. and Lab., pp. 9, 15-17, map. 



Statement regarding distribution and loss due to the boll weevil, and a brief history of 

 the spread of the weevil in Texas. 



No. 242. Olmsted, Victor H., 1910.— Causes of cotton damage in 1909.<Crop Reporter, 

 vol. 12, No. 12, p. 94, December 14. 

 A loss of 14.9 per cent of the crop of 1909, or 1,267,000 bales, is attributed to the boll weevil. 

 No. 243. Oppel, A., 1902.— Die Baumwolle. Leipzig, pp. 389-392, 3 figs. 



Brief general account. 



No. 244. Paulsen, T. C, 1908.— (See No. 231.) 

 No. 245. Pierce, W. D., 1907.— (See No. 166.) 



