May, 1920] AGRONOMY L99 



1398. Richter. [Rev. of: Fallada, <). Zur Riibensamenbeizung mit Schwefelsaure. 

 (Germination of beet seed after corrosion with sulphuric acid.) OeBterreich-Ungax. Zeitschr. 

 Zuckerindust. unci Landw. 22: 1917.] Biedermann's Zentralbl. Agrikulturchem. 47: 324 326. 

 1918. 



1399. Ritzkma Bos, .J. Boekbespreking. [Book review.] [Rev. of: Eeidema, J. Be- 

 strijding van Onkruiden. (Combatting weeds.) 2 ed., price 35 florins. J. B. Wait* i : I rron- 

 ingen and The Hague.] Tijdschr. Plantenz. 24: 220. 1918. 



1400. Robbins, \V. \V., and Breeze Boyack. The identification and control of Colorado 

 weeds. Colorado Agric. Exp. Sta. Bull. 251. 123 p., 77 fig. 1919.— This bulletin discusses 

 the legal aspect of weed control, pure seed, losses caused by weeds, nature of weeds, principles 

 of weed control, weeds as ensilage. Descriptions and illustrations of the principal Colorado 

 weeds constitute the larger part of the bulletin. — Walter G. Sackett. 



1401. Sampson, Arthur W. Plant succession in relation to range management. U. S. 

 Dept. Agric. Bull. 791. 76p., 26 fig. 1919— See Bot. Absts. 4, Entry 380. 



1402. Schatzlein. [Rev. of: Sidenius, E. Diingungsversuche zu Tabak 1915 bis 1916. 

 (Fertilizer experiments on tobacco, 1915-1916.) Mededeel. Proefstat. Vorstenlandsche Tabak 

 26: 1916.] Biedermann's Zentralbl. Agrikulturchem. 47: 318-320. 1918.— See Bot. Absts. 3, 

 Entry 1790. 



1403. Scherffitjs, W. H. Notes to cotton growers. Agric. Jour. South Africa 9 5 : 35-37. 

 2 fig. 1919. 



1404. Schribaux, F. Sobre las siembras tardias de remolachas. [Concerning late sow- 

 ing of sugar beets.] Informacion Agric. [Madrid] 9: 198-199. 1919. — As a means of over- 

 coming delay in sowing, due to scarcity of labor, soaking the seeds for from two to five days 

 in advance of planting is recommended. The seeds are dried either in the sun or artificially 

 and are planted immediately, although there is no injury if sowing is delayed a day or so. — ■ 

 John A. Stevenson. 



1405. Shaw-Scott, G. Prospects of hop-growing in South Africa. South African Jour. 

 Indust. 2 : 519-533. 1919. 



1406. Southworth, W. Development of fodder corn. Agric. Gaz. Canada 6: 25S-261. 

 Fig. 1-2. 1919. — Several years test for yield of a number of northern grown varieties of corn 

 (maize) is presented. — O. W. Dynes. 



1407. Sp afford, R. R. Farm types in Nebraska as determined by climatic, soil and eco- 

 nomic factors. Nebraska Agric. Exp. Sta. Res. Bull. 15. 37 fig. 1919. — Nebraska agricul- 

 tural areas as determined by climate, soil and economic factors, are chiefly considered. The 

 data are mostly taken from the Thirteenth Census of the United States. The paper deals 

 mainly with the kinds of crops grown and their yields.— It is concluded that temperature has 

 the greatest effect in determining the boundaries of crop types, but that rainfall, soil and eco- 

 nomic conditions can have a marked influence. — T. A. Kiesselbach. 



140S. Taylor, H. W. Cotton culture. Rhodesia Agric. Jour. 16: 197-201. 1919. 



1409. Taylor, H. W. Tobacco cultivation. The importance of selecting seed plants and 

 grading seed. Rhodesia Agric. Jour. 16: 18-23. 1919. 



1410. Thomas, Roger. The improvement of "Tinnevellies" cotton. Agric. Jour. India 

 14: 315-330. 1919.— The paper deals with the work done, up to the end of the 1917 season, on 

 the selection, propagation and marketing of unit strain selections of cotton in the ('Tinny' 

 tract) three southernmost districts of the Madras Presidency. An attempt is being made to 



