Oira-VAIIIETY COTTON" COMMUlsTITIES. 49 



strated the practical value of the one-variety plan and the impor- 

 tance of extending it to other regions. Not only supplies of good 

 seed but cultural improvements and marketing problems can be 

 worked out to better advantage in one-variety communities on ac- 

 count of the better basis of production. More active interest and 

 greater skill in the handling of the crop are developed when the at- 

 tention of all the farmers of a community is directed to a single 

 superior variety instead of being confused and dissipated by the 

 presence of different varieties and inferior mixed stocks. Hence, 

 a careful consideration of the one-variety plan may be urged upon 

 those who are interested in any measures of improvement in the 

 cotton industry. In view of the enormous wastes of the present 

 system there should be no unnecessary delay in utilizing the varie- 

 ties and other improvements that are possible and ready to be 

 applied as soon as the farming public is sufficiently informed. 



LIST OF PUBLICATIONS ON COMMUNITY COTTON IMPROVEMENT. 



The following list includes publications issued by the Department 

 of Agriculture and a few other papers that treat of improvement of 

 the cotton industry through community organization, in order to 

 utilize superior varieties and maintain pure seed supplies : 



Cotton selection on tlie farm by the characters of the stalks, leaves, and 

 bolls. By O. F. Cook. Bureau of Plant Industry Circular No. 66. Issued 

 August 13, 1910. 



Cotton improvement on a community basis. By O, F. Cook. Yearbook for 

 1911, pp. 397^10. See also report of the Chief of the Bureau of Plant In- 

 dustry for 1911, p. 24. 



Selection of cotton and corn seed on southern farms. By S. A. Knapp and 

 J. A. Evans. Bureau of Plant Industry Document '^o. 747. (Farmers' Co- 

 operative Demonstration Work No. "A"-67.) Issued May 11, 1912. 



Factors affecting the production of long-staple cotton. By O. F. Cook. Bureau 

 of Plant Industry Circular No. 128, pp. 3-9. Issued April 26, 1913. 



Cotton problems in Louisiana. By O. F. Cook. Bureau of Plant Industry 

 Circular No. 130, pp. 3-14. Issued June 21, 1913. 



The relation of cotton buying to cotton growing. By O. F. Cook. U. S. 

 Dept. of Agriculture Bulletin No. 60. Issued February 16, 1914. 



Custom ginning as a factor in cotton-seed detei'ioration. By D. A. Saunders 

 and P. Y. Cardon. U. S. Dept. of Agriculture Bulletin No. 288. Issued Sep- 

 tember 7, 1915. 



Community production of Durango cotton in the Imperial Valley. By 

 Argyle McLachlan. U. S. Dept. of Agriculture Bulletin No. 324. Issued 

 December 22, 1915. 



Community production of Egyptian cotton in the United States. By C. S. 

 Scofield, T. H. Kearney, C. J. Brand, O. F. Cook, and W. T. Swingle. U. S. 

 Dept. of Agriculture Bulletin No. 332. Issued January 13, 1916. 



Tests of Pima Egj^ptian cotton in the Salt River Valley, Arizona. By T. H. 

 Kearney. U. S. Dept. of Agriculture, A. & D. R. P. Circular 1. Issued De- 

 cember 6, 1916. 



