524 EXPEKIMENT STATION BECORD. 



salt used as a fertilizer the yield was increased and the plants bad a darker 

 green color, due, it is thought, to intensified chlorophyll formation and hence 

 greater elaboration of organic matter. 



An investigation on intensive nitrification and the establishment of 

 hig-h-yielding niter beds, Muntz and Laine {Ann. Inst. Nat. Agron., 2. ser., 

 6 {1001), Xo. 1, pp. 15-1',3, fiffs. -',; Ann. Chim. et Pliys., 8. ser., 11 {1907), Aug., 

 pp. J,39-5~-'t, figs. 4; abs. in Chem. Zenthl., 1901, II, Xo. 11, p. 931). — This is a 

 detailed account of investigations briefly reported elsewhere (E. S. R., 18, pp. 

 323, 430). 



New nitrogenous manures {Agr. Students' Gaz., n. set:, 13 {1901), No. 4, 

 pp. 125-128). — Progress in the manufacture and agricultural use of calcium 

 cyanamid and basic lime nitrate is briefly reviewed. It is stated that since the 

 processes of preparing these compoimds depend on the production of cheap 

 electric power they are likely to be economically produced only in countries 

 rich in natural water power. 



The preparation of nitrogen-oxygen compounds from the air by electrical 

 means, B. Springfeldt {Elcktrochcm. Ztschr., i.J {1901), Xo. 5, pp. 91-95, figs. 

 11). — Processes and apparatus proposed for this purpose are briefly described. 



Nitrate facts and figures, A. F. B. James {London, 1901 ; rev. in Chem. Xews, 

 95 {1901), Xo. 2483, p. 310). — This is a compilation of data relating to com- 

 panies now in existence and their directors, date of formation, capital, dividends, 

 reserve funds, output, etc. 



Chemical manures in Egypt {Chem. Trade Jour., J/l {1901), Xo. 1015, pp. 581, 

 582; Dip}, and Consular Rpts. [London}, Ann. Ser., 1901, Xo. 3860, p. 30; ais. 

 in Jour. Soc. Chem. Indus., 26 {1901), Xos. 11, p. 919; 23, p. 1248; Holland 

 Abroad, For. Ser., 15 {1908), Jan. pp. 15, 16). — The import and use of chemical 

 fertilizers in Egypt are briefly discussed. The imports in 1906 are stated to 

 have been 12,725 tons valued at $606,550.59. There has been a rapid increase 

 in the use of manures in this country in recent years, due mainly to the work 

 of the Khedivial Agricultural Society. The greater part of the imports is from 

 the United Kingdom, but a large (about two-thirds) and rapidly increasing 

 proportion is obtained from Belgium. The principal native manures, " sabak," 

 river and canal mud, stable refuse, etc., are entirely inadequate to meet the 

 requirements of increased production of cotton and other crops in Egypt, and 

 the only manures manufactui'ed in Egypt are poudrette and other sewage 

 products prepai'ed by a company at Cairo. There is no monopoly for the im- 

 port of artificial fertilizers, and the government is encouraging the free use of 

 chemical manures. There was a vei-y large increase of imports of fertilizers 

 from the United States during the year. 



The consumption of Stassfurt potash salts in France and other coun- 

 tries, Maizieres {Engrais, 21 {1906), Xo. -JO, pp. 915, 916; abs. in Chem. 

 Abs., 1 {1901), Xo. 15, p. 2011). — Statistics and a plea for greater use of potash 

 salts in France. 



Phosphates and superphosphates, T. Collot {Jour. Agr. Prat., n. ser., IS 

 {1901), No. 23, pp. 114-111; 14 {1901), No. 30, pp. 108-111).— This article gives 

 statistics of the production and consumption of phosphates and superphos- 

 phates, particularly in France, and a brief history of the manufacture of super- 

 phosphates in France and of the discovery of phosphate deposits, and discusses 

 the economic causes for the extension of the uses of phosphates and superphos- 

 phates. 



Wool fertilizer {Engrais, 22 {1901), No. 34, pp. 805, 806; Jour. Soc. Agr. 

 Brabant et Hainaut, 52 {1901), Xo. 33, pp. 839, 840).— This is a brief note ex- 

 plaining the general character of various kinds of wool refuse used as fertilizer 



