734 EXPERIMENT STATION RECORD. [Vol.41 



be equivalent to the location of tlie two factors on the same chromosome, 12.5 

 units apart. 



Cotton variety tests, 1918, A. C. Lewis and C. A. McLendon (Ga. Bd. Eat. 

 Bui. 52 (1919, pp. 40, flffs. 2). — This describes the continuation of work pre- 

 viously noted (E. S. R., 40, p. 237). 



[Cotton production in Trench North Africa], V. Cayia (Ann. Set. Agron., J^. 

 ser., S (1919), Nos. 1-3, pp. 1-46: 4-6. pp. 145-203, pi. i).— This comprises a 

 leather detailed account of the status of the industry in Egypt, Tunis, Algeria, 

 and Morocco during 1917. A bibliography containing 53 titles is appended. 



Cotton culture [in Rhodesia], H. W. Taylor (Rhodesia Agr. Jour., 16 (1919), 

 No. 3, pp. 197-201, pis. 2). — The possibilities of the crop in Southern Rhodesia 

 are indicated. 



Cotton and the cellulose industry, I-II, J. Meunieb (Rev. Sci. [Paris], 57 

 (1919), Nos. 5, pp. 135-142, figs. 16; 6, pp. 168-177, fig. i).— This comprises a 

 general discussion of the utilization of cotton in the industry. 



Utilization of delint for paper making, O. Kress and S. D. Wells (Cotton 

 Oil Press, 3 (1919), No. 3, pp. 27-36, figs. 18).— In this paper, a contribution from 

 the Forest Products Laboratory of the U. S. Department of Agriculture located 

 at Madison, Wis., the authors describe investigations in which an effort was 

 made to ascertain the suitability of second cut cotton linters, cotton shavings, 

 and hull fiber for paper manufacture. It is concluded that a high-grade paper 

 stock can be produced fi'om these materials. 



Flax as a fiber plant in British East Africa, H. Simpson (Dept. Agr. Nairobi 

 [Brit. East Africa] Bui. 3 (1919), pp. 10, pis. 4). — This comprises a brief de- 

 scription of flax production and of the preparation of the fiber for market. 



Oil from British-grown linseed (Jour. Bd. Agr. [London], 26 (1919), No. 4, 

 pp. 4^0-428). — This comprises a review of papers prepared by J. V. Eyre and 

 R. S. Morrell on the agricultural possibilities of flax production for oil in 

 England and on the commercial value of the oil. 



Prospects of hop growing in South Africa, G. Shaw-Scott (So. African 

 Jour. Indus.. 2 (1919), No. 6, pp. 519-530, figs. 2).— The possibilities of hop 

 growing in South Africa are discussed. 



The indigo of Nigeria and its value as a dye (Bui. Imp. Inst. [So. Kensing- 

 ton], 17 (1919), No. 1, pp. 31-37). — Lonchocarpus cyanescens, described as in- 

 digenous to West Africa, is said to yield the same blue dye as Indigofera spp. 

 Native methods of extracting the dye are briefly noted and the results of analy- 

 ses given of several samples of indigo from L. cyanescens examined at the Im- 

 perial Institute. The yield of indigo was found to be considerably less than 

 that secured from Indigofera. 



[Reseeding frost injured oat fields on moor soils], H. von Feilitzen 

 (Svenska Mosskulturfor. Tidskr., 33 (1919), No. 4, pp. 360-364, fig- i).— The 

 results are reported of experiments conducted to determine the relative ad- 

 vantages of reseeding and not reseeding oat fields severely injured by late 

 spring frosts. 



In the spring of 1918, when late heavy frosts had largely destroyed the parts 

 above ground of growing oat plants, one-half of a plat laid out in one of the 

 frost-damaged fields was reseeded June 8. while on the other half the frosted 

 crop was allowed to remain. The reseeded half produced 59 per cent more 

 straw and 103 per cent more grain than were secured fom the other half of 

 the plat. It was found also that the ci'op when cut from the reseeded half 

 contained only 2 per cent of weed plants as compared with 45 per cent for the 

 half with the frost-damaged crop. 



Potato experiments, 1917 and 1918, H. O. Werner (North Dakota Sta. Bui. 

 129 (1919), pp. 3-22, figs. 3). — Variety tests conducted at several points in the 



