2 AGRONOMY [Bot. Absts., Vol. V, 



8. Becker, Josef. Versuche zur Unterscheidung landwirtschaftl. Samerelen und 

 Futtermittel mit Hilfe der Serumreaktion. [Serum reaction an aid in the determination of 

 agricultural seeds and feeds.] Fiihl. Landw. Zeit. 67 : 114-120. 1918. — An antiserum, produced 

 by inoculating into animals (rabbits) a certain albumen, possesses the power of causing pre- 

 cipitation of the substance used for inoculation. By means of such a serum reaction it is 

 possible to clearly distinguish between various agricultural seeds and feeds and easily detect 

 adulterations. In preparing the material for inoculation the seeds are ground into a fine 

 powder, extracted with a 10 per cent sodium chlorid solution, the extract filtered and the 

 protein precipitated with ammonium sulphate. The precipitate is filtered, washed and dried. 

 Before being used the dried powder is dissolved in a physiological salt solution — 5 grams of 

 the powder in 100 cc. of solution. Of course, it must also be borne in mind that the serum 

 is in man}^ cases specific only when used in the proper dilution. — Ernst Artschwager. 



9. Brown, W. H., and A. F. Fischer. Philippine forest products as sources of paper 

 pulp. Forest. Bur. Philippine Islands Bull. 16. 13 p. PI. 1. (1918) 1919.— See Bot. Absts. 

 6, Entry 161. 



10. Bussy, P. Etude agricole des terres de la Cochinchine. [An agricultural study of 

 the soils of Cochinchina.] Bull. Agric. Inst. Sci. Saigon 2: 1-11. 1920. 



11. Chalmers, D. F. Report on the operations of the Department of Agriculture, Burma, 

 1919. 15 p. 1919. — The annual report of the Director of Agriculture for Burma, giving the 

 results of development and testing of improved varieties of crop plants, commonly cultivated 

 in Burma. Pebyugale, a variety of Phaseolus lunatus, condemned for export purposes on 

 account of its hydrocyanide content, is found to contain a negligible amount of the poison. — 

 V/infield Dudgeon. 



12. Chevalier, A. Culture et valeur alimentaire des principales legumeneuses tropi- 

 cales. [Culture and food value of the principal tropical legumes.] Bull. Agric. Inst. Sci. Saigon 

 1: 330-340. 1919. — A general discussion of the commonly cultivated species of the genera 

 Soja, Arathis, Mucuna, Phaseolus, Vigna, etc. — E. D. Merrill. 



13. Chittenden, E. J. The effect of "place" on yield of crops. Jour. Roy. Hortic. 

 Soc. 44: 72-74. Fig. 20, 21. 1919. — This is a report of a comparison of yields of outside and 

 inside rows of potatoes planted in plots in which the yields averaged 100 for the former to 72 

 for the latter. — J. K. Shaw. 



14. Christianson, C. General consideration of peat problems. Jour. Amer. Peat Soc. 

 13: 7-9. 1920. — Peat and peat lands are valuable for both agricultural and industrial pur- 

 poses. Working out the details of the utilization of peat lands for agricultural and fuel 

 purposes, constitutes the peat problem. — G. B. Rigg. 



15. Clouston, D. The selection of rice on the Raipur Experimental Farm. Agric. and 

 Co-op. Gaz. [India] IS 1 .: 5-9. 1919— See Bot. Absts. 4, Entry 543. 



16. Collens, A. E., and others. Sugar-cane experiments in the Leeward Islands. 

 Report on experiments conducted in Antigua and St. Kitts-Nevis in the season 1916-17 and 1917- 

 18, Part 1. Imperial Department of Agriculture, Barbados. 1919. — In Antigua the experi- 

 ments were carried on at nine different stations of varying soil conditions. The varieties 

 which have given the best results as plant canes over a long period of experimentation are 

 B. 4596, Sealy Seedling, B. 6308, B. 1528 and B. 3922. B. 3412 tops the list in the experiments 

 with ratoons over a period of 16 years. In the Colony of St. Kitts-Nevis, B. 6308 heads the 

 list of plant canes for 1916-17. In 1917-18, Ba. 6032 is first, followed very closely by B. 6308 

 and B. H. 10(12). As ratoons, A. 2 and B. 1528 head the lists respectively.—/. S. Dash. 



