grown in Alabama; the Lone Star, Mexican Big Boll, and Rowden were grown in 

 different parts of North Carolina; and the typical North Georgia cotton was grown 

 in "North Georgia." 



All the cottons were tested under identical mechanical conditions. 



The grades, lengths of staple, percentages of visible waste, strengths of the 

 yarns, and percentages of average deviation or irregularity of the sizings and 

 strengths indicate that for hard twisted or warp yarns the varieties tested, if 

 placed in order of their merit and attractiveness from a spinner's viewpoint, 

 would fall in the following rank: 



1. Acala and Mexican Big Boll - equal. 



2. Lone Star and Rowden - equal. 



3. North Georgia - typical. 



These tests show clearly the desirability, from a spinner's standpoint, of 

 fiber produced by purebred strains of superior varieties of cotton over that pro- 

 duced from commercial seed even when grown in districts in which the reputation 

 for character in cotton is excellent. 



1924 - Andres, A. Etwas uber den "boll weevil" (Some notes on the boll weevil). 

 Ztschr. Angew Ent. 10(2):470-472. Oct. Berlin. 



A brief resume of existing information on the cotton boll weevil in the 

 United States. 



1924 - Symes, C. B. Insect pests of cotton. Rhodesia Agr. J. 2 1 (2): 1 36- 151, 4 pi. Apr. 

 Salisbury. 



Cotton is being grown as a new crop in Rhodesia, where over 50 species 

 of malvaceous plants already occur, including some 25 species of Hibiscus, so 

 that many of the well-known pests of cotton are probably present, A short ac- 

 count is given of each of the more usual pests occurring in other countries, 

 with the most successful remedies against them. Neither of the 2 chief pests, 

 Platyedra gossypiella (pink bollworm) or Anthonomus grandis (cotton boll 

 weevil) as yet occur in Rhodesia. 



1924 - Vasilev, I. V. Cotton pests. Cotton Indust. 3(7-8):86- 1 1 6, 37 fig. July-Aug. 



Moscow. 



Anthonomus grandis and Platyedra gossypiella have not yet been recorded, 

 their absence and that of many southern tropical pests being due to the peculiar 

 climatic conditions and methods of cultivation necessitating artificial irrigation. 



1925 - Anonymous. Handbook of American Cotton Association boll weevil campaign 



(season of 1924-25). Amer. Cotton Assoc., 32 p. St. Matthews, S. C. 



The losses sustained by the American cotton crops of 1921 and 1922 as a 

 result of attack by boll weevil were estimated at an aggregate of about 200,000,000 

 pounds. The American cotton association, therefore, undertook the leadership of 

 a general campaign, as a result of which 933 cotton demonstration farms of 10 

 acres each were established in 1923. The movement was enthusiastically en- 

 dorsed by growers. These were responsible for the success of the control 

 measures, applied under simple and practical instructions. 



Many letters indicating the success of the campaign are quoted. In one of 

 these it is stated that 4 good applications of calcium arsenate will result in a 

 bale of cotton per acre on good land under heavy weevil infestation. With the use 

 of poison, 1,250 lbs. of seed cotton were obtained per acre, whereas from the 

 same type of land without poison only 700 lbs. were produced. Hundreds of 

 farmers testified that the plan of cotton culture and weevil control as applied 

 under the supervision of the Association increased the yield of cotton per acre 

 by 50%. In two years the Association expended nearly $250,000 in field demon- 

 stration work in 1 1 states, and the results obtained have fully justified the 

 expenditure. If all the 800 infested counties of the entire cotton growing area 

 could be covered by demonstrations, as was done in Georgia, S. Carolina, and 

 Alabama, the weevil could be definitely controlled. 



187 



