SOILS FERTILIZERS. 221 



(ieei)l.v (lid not increase tlie fit'rniination nor act injnrionsly on the young plant- 

 lets. Neither this fertilizer nor lime niter can be applied as a top-dressing to 

 advantage, at least not for grass and potatoes. When so applied they have a 

 strong burning effect, especially in dry. hot weather. The fertilizer value of 

 cyanauiid and anuuoniuni sulphate for Swedish turnips, mangels, potatoes, and 

 oats grown on cla.v land is fully equal to that of the sodium or calcium nitrates. 

 The latter fertilizers are of similar value for oats. Late applications of 

 cyanamid and annnonium sulphate greatly reduce their fertilizer value. The 

 after-effect of the niti'ogen remaining in the ground on the 2 following crops is 

 mo.st marked in the case of cyanamid. One kilo of nitrogen in sodium or 

 calciiun nitrate has nearly twice the value of a kilo of nitrogen in annnonium 

 suli»hate or cyanauiid as fertilizers for sugar beets or fodder beets. Calcium 

 nitrate has an excellent fertilizing effect, in most experiments even exceeding 

 that of sodium nitrate. — f. w. woll. 



New nitrogenous fertilizers, IJ. Giillin {Bill. »S'o('. A<jr. France, ii. .sr/.. 39 

 (1907), May 1, Sii]).. iij). 331-339). — The manufacture and use of lime nitrogen 

 and lime niter are briefly discussed and a number of practical experiments on 

 different crops in Fnince are reported. 



Synthetic calcium nitrate, N. Passkrini (Nirii^ta. '/. set:. 13 {1907). Xo. 1(1. 

 l)p. 22G-229). — An analysis of a commercial sample of lime niter is reported, 

 showing about 13 per cent of total nitrogen and 25 per cent of calcium oxid. A 

 very small proportion of the nitrogen was in nitrous form. 



The products prepared from alkaline earth carbonates, charcoal, and nitro- 

 gen, O. KfiiLixo (Brr. Dciit. Chciii. GcscU.. ',0 {1907), p. 310; abs. in riiciii. 

 Ztf/.. 31 {1907), Xo. 30. Revert., p. iJ9).— Studies of the amounts of alkali 

 cyanids and cyanamids formed at 000 to 1,400° C, under different conditions, 

 are rejjorted. 



The system, lime, nitric acid, and water, F. K. Cameron and W. O. IvObin- 

 soN {Jour. Phys. Chew., 11 {1907), No. 'i, pp. 273-278, figs. 2).— The studies 

 here reported of equilibrium in such a system were undertaken in view of the 

 ])rominence which has recently been given to a mixture of lime and nitric acid 

 (" lime niter "). as produced l)y the Birkeland and Eyde process. 



The physiological action of dicyananiids with reference to tlieir value as 

 fertilizers, R. Perotti {Cenihl. Bukt. [e/c], 2. AM., IS {1907). p. .jO ; abs. in 

 Clioii. Zlij.. 31 {1907), Xo. 32, Reperf.. p. 17 Jj). — Solutions containing 2.,'') parts 

 of dicyanamid per 1,000 had no injurious effect. Such effect was observed only 

 when the amount reached 3 to 4 parts per 1,000. Different plants varied in 

 their power of resistance. 



Storage of calcium cyanamid, H. von Feilitzen {Chem. Ztg., 31 (1907). Xo. 

 30, p. 3S.5: ah.s. in Jour. Soc. Chem. Indus., 26 (1907), No. 9, p. 47.S).— It is 

 shown that calcium cjanamid prepared by the Polzenius process contains a 

 slight excess of calcium chlorid, which renders the product very hygroscopic, 

 causing it to cake together in hard lumps and to burst the containing sacks. 

 A consi(leral)le loss of nitrogen as anunonia (5 per cent or more of the total 

 nitrogen) during 4 months was also observed. 



The Stassfurt salt industry, W. C. Blasdale (Chem. Engin., 5 (1907), p. o9 ; 

 ahs. in Chem. Ahs., 1 (1907), Xo. 5. p. 628). — The character of the deposits and 

 the methods of manufacture at the new Stassfurt mines are described. 



Cotton-seed meal as a fertilizer, E. II. .Jenkins and J. P. Street (Connecti- 

 cut fitafe Sta. Bill. l')6. pp. 7). — This l)nlletin l)riefly discusses the color, jjrice, 

 and nitrogen, phosphoric acid, and ixitash content of cotton-seed meal, as well 

 as guaranties of composition and rel»atcs which may fairly be claimed when the 

 actual composition does not come up to the guaranty. 



