430 EXPEKTMENT STATION EECOED. 



on sandy soil mixcil with rlay. and witli mustard and carrots on sandy soil. 

 In several instances lime niter produced somewhat better results than nitrate 

 of soda. This was due to the lime which it contained in addition to its nitro- 

 gen, as shown by the fact that pots fertilized with nitrate of soda and calcium 

 carbonate gave higher results than nitrate alone, and as a rule results similar 

 to those obtained from a corresponding amount of lime niter. 



The author concludes that there is no reason to expect any ditference in the 

 fertilizing effect of a lime niter free from lead, and a nitrate of soda free from 

 perchlorate and similar poisonous substances. — r. w. w^oll. 



Nitrogenous fertilizers in 1905, K. Rordam (Tidsskr. Landokonom., 1906. 

 Nos. 7, pp. Ji01--'iOS; 8, pp. Ji33-^52). — A discussion of the various nitrogenous 

 fertilizers on the market, and especially of calcium cyanamid and lime 

 niter, their method of manufacture, comparative fertilizer value, and the pros- 

 pects of their future imjiortance. — f. w. \\oll. 



The oxidation of atmospheric nitrogen in the electric arc, F. M. Perkin 

 (Xattirc [London]. U, inHiG). Xo. i.92i, pp. Ji'i'i-'i-'i'l Pvx- -'/). — A brief account 

 of various methods of electrical oxidation of the nitrogen of the air, but par- 

 ticularly of the Birkeland and Eyde process as developed at Notodden, Norway. 



The utilization of water power in the electro-chemical manufacture of 

 fertilizers, Cote {Ann. Hoc. Agr. Sci. ct Indus. Lijon. 1905, pp. 215-211. fiijs. 

 .'/). — A general discussion of this subject from the standpoint of rural econom- 

 ics, the synthetic preparation of nitric acid and c.vanamids. liquefaction of air, 

 and manufacture of copper salts. 



Calcium cyanamid (Kalkstickstoff), H. Frank (Pure Products, 2 {1906), 

 Xo. S. jtp. .>i'i(!-/i5.'i). — This is a translation of a lecture before the Agricultural 

 Club of Berlin, which describes briefly the methods of preparing this substance 

 and its use as a fertilizer. 



Results of tests of calcium cyanamid as a fertilizer {Risidtafi di alctine 

 prove di concimazlone con calciocianainidc. Rome. 1906. pp. -'/.'/, figs. ,?7) — 

 This is a compilation of experiments with this material on a number of differ- 

 ent crops b.v varioiis investigators. 



Lime nitrogen, nitrogen lime, and nitrate of lime, Gerlach {Dent. Landir. 

 Pres.^e, 33 {1906), No. //,}, p. 365). — The use and value of these products are 

 briefly discussed. 



Chilean nitrate deposits {Jour. Franklin Inst., 162 {1906), No. 2, p. 159). — 

 A brief note is given on the opinion commonly held by Chilean miners that the 

 formation of nitrate deposits is due to atmospheric electricity. It is stated that 

 " there is a remarkable amount of mist surcharged with electricity in the 

 Pampas, whei'e the saltpeter is mined, so much so that telephones are deranged. 

 Apparently the ozonized air disengages nitrate of ammonia, which combines 

 with rock salt to form saltpeter." 



The Chilean nitrate of soda industry and the new cartel, P. Krische {FilJi- 

 iing's Landir. Ztg.. 55 {1906). No. 16, pp. 563-56S). — A general discussion of the 

 condition of this industry with special reference to the nitrate supply of 

 Germany. 



Mountains of saltpeter, PI. H. Dunn {TecJi. World Mag., 5 {1906), No. 4, 

 PI). 397-,^01, //r/.y. ', : ahs. in A7ner. Fcrt., 25 (1906). No. 3, pp. 10-12).— The 

 deposits of nitrate occurring in Death Valley, California, are described. 



The utilization of peat bogs for the intensive production of nitrates, 

 A. MtJNTZ and E. Laine {Conipt. Rend. Acad. ,S'cJ. [Paris], l.'i2 {1906), No. 23. 

 pp. 1 239-12.'!.', ; ahs. in Jour. Cheni. Hoe. [London]. 90 {1906). No. 525, II. p. 

 476). — Experiments ai'e reported which show that "when a 0.75 per cent solu- 

 tion of ammonium sulphate is passed over a peat bed impregnated with nitrify- 



