96 AGRONOMY [BoT. Absts., Vol. IX, 



614. JtTRiTZ, Chas. F. Prickly pear as a stock food. Jour. Dept. Agric. Union of South 

 Africa 1: 848-851. 1920. — The author states that prickly pear has been of service in South 

 Africa for ostriches, oxen, and pigs. During drought, prickly pear forms a valuable emer- 

 gency ration but cannot be advantageously fed to stock unless mixed with more concentrated 

 food; to the latter it is a valuable accessory. — Mary R. Burr. 



615. Kennedy, E. W. Wheat varieties under trial. Agric. Gaz. New South Wales 32: 

 241. 1921. — Yields are given of 4 wheat varieties at Condobolin Experiment Farm. — L. R. 

 Waldron. 



616. Khols, G. Steigerung der Ernteertrage durch vervollkommnete Bodenbearbeitung 

 und Saatenpflege. [Increased yields by perfect soil preparation and care of seed.] Mitteil. 

 Deutsch. Landw, Ges. 36: 225-235. 1921. — A review is presented of work done in 1911-1914, 

 in the cultivation of grain. The author shows that the use of a press drill and of a special 

 cultivator (Hack maschine) was advantageous, especially for wheat. Although the weed 

 problem is not discussed the author quotes with approval a statement of RtJMKER: "He who 

 cultivates, to destroy weeds, generally cultivates too late to derive the full profit from his 

 labor." — A. J. Pieters. 



617. Koch, Pieter. Seed selection of tobacco. Sun and Agric. Jour. South Africa 11: 

 44r47. 1920. — The author discusses the characters to be kept in mind when selecting differ- 

 ent types of tobacco, and gives notes with illustrations on the technique of bagging and grad- 

 ing. — A. J. Pieters. 



618. McCauley, C. Field experiments with fodders. Cowra experiment farm. Agric. 

 Gaz. New South Wales 32 : 237-238. 1921.— Cereals for hay yielded from 6 to nearly 9 tons of 

 green fodder per acre. Rape yielded nearly 6 tons and swede turnips 2.5 tons per acre. — 

 L. R. Waldron. 



619. Mach, F., p. Lederle, v. s. w. Priifung verschiedener Verfahren zum Rauchbar- 

 machen kleiner Tabakmengen. [Tests of various methods for curing and preparing small 

 quantities of tobacco.] Mitteil. Deutsch. Landw. Ges. 36: 215-217. 1921. — The author de- 

 scribes 3 methods for the home curing of small quantities of tobacco. Tables are given showing 

 the percentages of various substances in the tobaccos cured by each method. — A. J. Pieters. 



620. McKerral, a. Report of the Hmawbi Agricultural Station; Report on the TatkSn 

 Agricultural Station. Ann. Rept. Agric. Sta., Agric. Chem., Agric. Eng., Asst. Bot. Northern 

 Circle, and Asst. Entomol. Burma 1918-1919: 69-89. 1920. — The report records progress in 

 experiments with fertilizers; methods of cultivation; and selection, trial, and distribution 

 of seeds of crop plants. — Winfield Dudgeon. 



621. Matenaers, F. F. Die Silage aus dem Gemenge von Hafer, Erbsen und Wicken. 

 [Silage out of a mixture of oats, peas, and vetch.] Mitteil. Deutsch. Landw. Ges. 36: 249. 

 1921. — Much of the paper is a plea for the greater use of the silo in Germany. A brief account 

 of the successful use of a mixture of oats, pea, and vetch silage in Iosco County, Michigan, 

 is presented. — A. J. Pieters. 



622. MuNDY, H. G., J. A. T. Walters, and G. Mainwaring. Annual report of experi- 

 ments, Experiment Station, Salisbury, 1919-20. Rhodesia Agric. Jour. 18: 33-42. Fig. 1-3. 

 1921. — The authors report results of rotation experiments with maize, giving general cultural 

 practices and systems of fertilizing, arriving at the following conclusions: (1) The marked 

 advantage of a change of crop ; (2) the increased yield after a straw crop, the stubble of which is 

 ploughed under thereby supplying organic matter to the soil; (3) the still greater yield when 

 the previous crop has been a legume; (4) the outstanding merit of velvet beans as a previous 

 crop; (5) the advantage of early planting in a normal season on the high veld. — Liming trials 

 on ground nuts, maize, beans, summer wheat, and boer manna are reported. No marked 



