334 EXPEEIMENT STATION EECOKD. 



such seed is planted opportunity is afforded for a vast amount of cross-fertiliza- 

 tion in the field, and deterioration begins." 



It is noted that mixing may also occur to a small extent in the flues and in 

 the distributing, cleaning, and feeding devices. 



As ways of minimizing the amount of mixing it is suggested that the patron 

 cooperate with the ginuer. The flues, feeders, and cleaners should be made as 

 clean as possible and the roll in the roll box should be dropped before ginning 

 to secure seed for seeding purposes. 



A study of inheritance in the cotton hybrid, Sea Island and native St. 

 Croix, S. C. Harland {Rt}t. Agr.Expt. Sta. St. Croix, 1913-U, pp. 50-60, pi. 1).— 

 This article gives detailed descriptions of a native St. Croix and a Sea Island 

 " chance " variety of cotton and the Fi and F2 generation hybrids resulting 

 from a cross between these two varieties. The characters described include 

 bracts, boll characters, calyx, and lint characters. 



Experiments with cotton in Sicily in 1914, A. BoRzt (Bol. R. Giard. Colon. 

 Palermo, 2 (,1915), No. 2, pp. 67-S4). — Tests of 11 varieties showed a range of 

 from 32 to 35 per cent in yield of lint. In fertilizer tests with 600 kg. of super- 

 phosphate per hectare there was produced 1,447 kg. of seed cotton, which was 

 a larger yield than with other fertilizers, including sulphate of potash, cyana- 

 mid, and barnyard manure. Descriptions of the most promising varieties are 

 given. 



Variation in the male hop, Humulus lupulus, H. Wokiiald {Jour. Agr. 

 Sci. [Englaml], 7 {1915), No. 2, pp. 175-196, pi. i).— This gives results of ex- 

 aminations of male hop plants of both English and Oregon origin. 



The hops were found to vary in time of flowering and in characteristics of the 

 bine, leaves, laterals (inflorescences), stipules, and flowers. The following 

 type characters were discovered: (1) Time of flowering — early, medium, and 

 late; (2) color of bine — green and red; (3) length of laterals — long and lax, 

 .shoi't and dense; and (4) glands on the leaves — numerous and few. 



Classification of broom millets, M. G. Sikiusov {Selsk. KI10Z. i Liesov., 246 

 {1914), Dec, pp. 556-573, figs. 4)- — "^^^ author arranges about 40 varieties of 

 broom millet into three groups, viz, Miliaceuyn effusum, M. contractum or M. 

 nutans, and M. compactum, based upon the color of the grain. It is noted that 

 a flower required about 27 minutes to open, the greatest activity taking place 

 between 11 a. m. and noon. 



Observations on potato culture, V. G. Kotelnikov {Selsk. Klioz. i Liesov., 

 246 {1914), Oct., pp. 221-232). — It is noted that large tubers used as seed 

 produced larger yields, but that the net profit was not so great as when smaller 

 tubers, averaging about 2 oz. each, were planted. Experiments showed that 

 the vegetative energy of smaller tubers was greater by 7 to 11 per cent and 

 that a thicker planting of two small tubers in the same hill gave 30 per cent 

 more yield than larger ones planted more thinly. 



Prairie grass, W. S. Hill {Jour. Agr. [New Zeal.], 10 {1915), No. 4> PP- 

 313-318, figs. 4)- — This notes the improvement by selection of Bromus unioloides 

 at the Moumahaki Experimental Farm. The yield has been increased from 

 100 to 183, or nearly doubled. 



The culture of rice in California, C. E. Chambliss and E. L. Adams {TJ. S. 

 Dept. Agr., Farmers' Bui. 688 {1915), pp. 20, figs. 7). — This contains recom- 

 mendations based upon the results obtained at the Biggs Rice Field Station and 

 a study of the conditions under which rice has been grown in California. It 

 covers preparation of the seed bed and of the seed, manner of seeding, irri- 

 gation and drainage, methods of harvesting and thrashing, cost of production, 

 varieties (including variety tests), methods of improvement of the crop, notes 

 on rice products, aod eradication of weeds. 



