FIELD CROPS. 435 



[Flax experiments in India], E. M. Vandekerkhove (Agr. Research Inst. 

 Pusa, Bui. 25, 1911, pp. 11, pis. 4)- — This is a brief report of fertilizer and rate 

 of sowing tests of flax at Dooriah during the year 1910-11. 



Ragged Jaclc kale (Agr. Gaz. N. S. Wales, 23 (1912), No. 2, p. iS3).— Seed 

 sent from the botanical gardens to the Bathurst experiment farm produced 

 plants which ran to seed as soon as planted, presumably because of the lateness 

 of the season. Seed sent to the Glen luues farm, however, produced succulent 

 plants entirely devoid of woody fiber, but did not equal white chou moellier in 

 quality of green fodder. 



Black oats, A. H. E. McDonald et al (Dept. Agr. N. 8. Wales, Farmers^ 

 Bui. 50, 1911, pp. 3-13). — ^A discussion of the wild oat (Avena fatua), with sug- 

 gestions on its control and eradication. 



Fertilizers and the growth of rice, J. Zamora (Philippine Agr. and For- 

 ester, 1 (1911), No. 8, pp. 152-154). — This article states the result of pot ex- 

 periments with rice in which the chemically pure salts ammonium nitrate, potas- 

 sium phosphate, calcium phosphate, magnesium chlorid, magnesium nitrate, and 

 magnesium sulphate were used in molecular solutions. A table states the num- 

 ber of leaves, date of flowering, height of plants, and number of rice grains per 

 plant secured. 



Correlation in i*ye, D. Lehn (Illus. Landw. Ztg., 32 (1912), No. 3, pp. 13, 

 14). — The author presents figures from the records of C. Kraft, who has prac- 

 ticed individual selection from Zeelander rye for 10 years. 



From data for the 4-ycar period 190S-1911, it appears that the length of 

 haulms varies directly with length of head, number of internodes, weight per 

 head and per 1,000 kernels, and number of kernels per head, while it varies in- 

 versely as the weight per plant, the number of haulms, the density of head, the 

 grain weight per plant, and the chafl: percentage. 



Soy beans, W. F. Ingalls (Cooperstoicn, N. Y. [1912], pp. 36, pis. 3). — This 

 is a brief manual of information for the soy bean grower. 



The growth of sugar beet (Abs. in Jour. Bd. Agr. [London'], 18 (1912), No. 

 11, p. 943). — In a comparative test of sugar beets and mangels at 6 points in 

 Somerset the yields were 16 and 40 tons per acre, respectively. The beets were 

 left a little closer in the drills. Heavy manurial applications tended to depress 

 the sugar percentage of the beets. 



Experiments on the cultivation of sugar cane at the Partabgarh Experi- 

 mental Station, 1909-1911, G. Clarke et al (Agr. Research Inst. Pusa, Bui. 

 21, 1'912, pp. 29, pis. 2). — This is largely made up of tables stating the results of 

 rate of planting tests at the Partabgarh station in India during 1900-1911. The 

 author notes that the sugar canes of upper India difiier markedly from those of 

 other countries and demand very different treatment, and that the general con- 

 clusions holding good for varieties growing in Java, the West Indies, and south- 

 ern United States can not always be applied to them. 



Sweet potato investigation, T. E. Keitt (South Carolina Sta, Bui. 165, pp. 

 43). — Previous work on the sweet potato by the station (E. S. R., 25, p. 534) 

 is reviewed, and some general information regarding the crop is presented. 

 Determinations of sugar, glucose, and starch, and studies on the formation of 

 sugars and starch and the content of these substances at diflierent times of 

 harvesting are reported, together with descriptions of the different varieties 

 tested, fertilizer and proximate analyses of different varieties, and a report of 

 an additional laundry test of the starch. 



Determinations of samples filtered under pressure showed an average of 4.21 

 per cent, and samples filtered without pressure an average of 4.22 per cent, of 

 sucrose and glucose together. It was found that some changes took place in 



