222 AGRONOMY [BoT. Absts., Vol. X, 



1450. Anoxtmous. Falsificacion de la semilla de alfalfa. [Adulteration of alfalfa seed.] 

 Bol. Agric. Provincia Buenos Aires 1^: 3-4. 1920. — Warning is given that alfalfa seed may be 

 adulterated with seed of a weed, Medicago denticulata. — John A. Stevenson. 



1451. Anonymous. El pochote y su cultivo. [Kapok cultivation.] Jalisco Rural 3: 441- 

 445. 1921. — The cultivation and harvesting of kapok {Ceiba sp.) are discussed. — John A. 

 Stevenson, 



1452. Anonymous. Grass and cotton. Sci. Amer. Monthly 3: 62. 1921. [Abstract of 

 an article in Color Trade Journal, Aug., 1920.] — This article tells of a Japanese grass, Phijl- 

 lospadix Scouleri, used for fiber, which, mixed wnth cotton, makes a very strong thread. — 

 Chas. H. Otis. 



1453. Anonymous. Notes on some South African raw materials. Products of farm and 

 veld. South African Jour. Indust. 4: 359-371. 1921. — Excepting the baobab and possibly the 

 wattle, South Africa has no trees suitable and in sufficient quantities for paper making, but a 

 number of grasses have been found suitable. These are Cymbopogon hirtus, Themeda Jorskalii 

 var. ynollissima Hack, Tambookie grass, Sorghum halepense, and Andropogon hirtiflorus. 

 The chief fiber plants grown in the Union are Cannabis sativa, Hibiscus cannabinus, Fur- 

 croya gigantea, Asclepias frulicosa, Sida rhombifolia, Sparmannia, and Sisal. Possible sources 

 of oils, waxes, gums, vegetable dyes, drugs, industrial alcohol, and tanning materials are 

 also mentioned. — E. M. Doidge. 



1454. Anonymous. Trigos para simientes. [Seed wheat.] Rev. Soc. Rural Cordoba 

 [Argentina] 20: 4979-4989. 1920. — This is a discussion of the varieties of wheat adapted to 

 Argentina. — J . A. Stevenson. 



1455. Arana, Marcblino db. Praderas artificiales en secano. [Artificial pastures for 

 unirrigated lands.] Bol. Agric. Tec. y Econ. [Espana] 12: 362-366, 433-435. 1920.— Alfalfa 

 and other legumes are recommended for planting on dry lands. — John A. Stevenson. 



1456. Arnim, von. Vorrichtung zum Beizen des Saatgetreides. [Apparatus for treating 

 seed grain.] Mitteil. Deutsch. Landw. Ges. 36: 563-564. 1921. — The author calls attention 

 to the fact that the various forms of apparatus for treating seed grain now on the market are 

 expensive; he suggests a simpler form, which is described and illustrated. — A. J. Pieters. 



1457. Baker, E. Hop growing experiments in South Africa. Jour. Dept. Agric. Union 

 of South Africa 3 : 27-43. PL 1-1 4- 1921. — Experiments in hop growing carried out at George 

 during the past 3 years are described. It may now be definitely stated that hops can be grown 

 satisfactorily in at least one part of South Africa and that hop growing may possibly develop 

 into a staple industry. — E. M. Doidge. 



1458. Balme, Juan. No es indiferente elegir cualquier variedad de trigo para semilla. 

 [Use care in selecting a wheat variety for planting.] Rev. Agric. [Mexico] 6: 140-142. 4 fig- 

 1921. — The importance of selecting a variety of wheat adapted to the locality in which it is 

 to be grown is emphasized. — John A. Stevenson. 



1459. Bornemann, O. Lemmermann, Gerlach, und Friedr. Riedel. Zur Eohlenstoffer- 

 nahrung der Kulturpflanzen. [Concerning carbon nutrition of cultivated plants.] Mitteil. 

 Deutsch. Landw. Ges. 36 : 481-485, 496-498. 1921 . — This is a presentation of the different views 

 of the authors on this subject. All agree that an increase in the CO2 content of the atmos- 

 phere results in increased plant growth. Bornemann, however, contends that stable and 

 green manure turned under in spring rather than in fall results in larger yields because of 

 the increased CO2 content. Lemmermann cites several experiments to show that the best 

 time to turn under stable and green manure varies with the character of soil, spring plowing 

 giving best yields on light soils, while on heavy soils greater yields may be expected from fall 

 plowing. This he attributes in part to the more speedy nitrification on light soils and the 



