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BOTANICAL ABSTRACTS 



A monthly serial furnishing abstracts and citations of publications in the international field of 



botany in its broadest sense. 



UNDER THE DIRECTION OF 



THE BOARD OF CONTROL OF BOTANICAL ABSTRACTS, INC. 



Burton E. Livingston, Editor-in-Chief 

 The Johns Hopkins University, Baltimore, Maryland 



Vol. VI JANUARY, 1921 No. 4 



ENTRIES 1398-2032 



AGRONOMY 



C. V. Piper, Editor 

 Mary R. Burr, Assistant Editor 



139S. Anonymous. United States grades for milled rice recommended by the United States 

 Department of Agriculture. U. S. Dept. Agric. Dept. Circ. 133. 16 p. 1920. 



1399. Anonymous. Spur feterita. U. S. Dept. Agric. Dept. Circ. 124. 4 p. 1920.— A 

 member of the sorghum group. General notes on culture and feeding value. — L. R. Hesler. 



1400. Anonymous. Grimm alfalfa. U. S. Dept. Agric. Dept. Circ. 123. 4 p. 1920.— 

 Description, seeding, and inoculation. — L. R. Hesler. 



1401. Anonymous. Dry-land alfalfa. U. S. Dept. Agric. Dept. Circ. 122. 4 p. 1920. 

 Description and discussion of seeding. — L. R. Hesler. 



1402. Anonymous. Velvet beans. U. S. Dept. Agric. Dept. Circ. 121. 3 p. 1920.— 

 Description, planting, feeding value, and notes on varieties. — L. R. Hesler. 



1403. Anonymous. Alfalfa. U. S. Dept. Agric. Dept. Circ. 115. 6 p. 1920. — A gen- 

 eral discussion, including description, soil requirements, preparation of land, liming, ferti- 

 lizing, inoculation, seeding, and treatment of the stand.— L. R. Hesler. 



1404. Anonymous. Effect of frost on cane. [Rev. of: Anonymous. Letter to Nambour 

 Chronicle.] Australian Sugar Jour. 12: 291. 1920,. — The writer notes the effect of frost on 

 sugar cane during the past 18 years, and states that an early frost is most serious to cane to 

 be cut during the oncoming crushing season. Cane that is intended to stand over is injured 

 according to the forwardness of growth, for while the younger and later plants may be injured 

 more severely, the tops fall over and form a protection for the new growth. In 1908 the 

 writer had a crop, estimated to cut 18 tons per acre, injured by frost which he let stand over, 

 with the result of a gain the next season of over 22 tons per acre in 1910 freezing increased 

 the yield from a 50 ton estimate to 124 tons actually cut in 1911. — E. Koch. 



1405. Barber, C. A. The growth of the sugar cane. No. VIII. Internat. Sugar Jour. 

 22:442-446. 3 pi., 5 fig. 1920. — Thickness of cane within certain limits is fixed for each 

 variety. Ordinary sugar cane in the field will have a thickness of from 1£ to 2 inches, but 

 there are two classes in which these limits are overstepped. "Elephant" canes, 2 to 3 inches 



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BOTANICAL ABSTRACTS, VOL. VI, NO. 4 



