824 EXPEEIMENT STATION EECORD. 



such as acetic acid, paraffin, tar, and aslies of considerable fertilizing value, are 

 obtained. 



Nitrogenous fertilizers prepared from peat, Maizieres (Engrain, 23 

 (1908), yo. 39, 1)1). 92Ji--9.i6). — This is a brief review of methods which have re- 

 cently been proposed for this purpose, especially those of Bazin and Woltereck 

 (E. S. R., 19, p. 1124; 20, pp. 23, 523). 



Nitrate from ammonia, K. W. Jurisch {Chem. Ztg.. 32 (1908), No. 67, pi). 

 791, 792). — This is a review of investigations dealing with the oxidation of 

 ammonia to nitric acid. The Ostwald method receives particular attention. 



On lime nitrogen, G. Bredig (Chrm. Ztg., 32 (1908), No. 09, pp. 810, 811).— 

 Studies on the rate of fixation of nitrogen by calcium carbonate with and with- 

 out the addition of catalytic substances and with varying pressures are reviewed 

 in this note. 



Cyanamid or lime nitrogen (Anier. Pert., 29 (1908), No. 5. pp. 18, 19, figs. 

 3). — This is an illustrated description of works which are being built at Niagara 

 Falls, Ontario, for the manufacture of calcium cyanamid. It is stated that 

 these works are to have a capacity of 15,000 tons per annum. 



Chilean nitrate fields, R. Haxna (Amei: Pert., 29 (1908), No. 5, pp. 10-12; 

 Jour. Indus, and Engin. Chem., 1 (1909), No. 1, pp. ^o-^T; Mo. Cons, and Trade 

 Rpts. [U. S.], 1909, No. 3>,0, pp. iSi-i 8.5). —This article explains briefly how 

 the nitrate industry is conducted and discusses composition, shipping methods, 

 and available deposits. 



Nitrate of soda (Amer. Pert., 30 (1909), No. 2, pp. 8, 9). — This article gives 

 in brief the official Chilean estimate of the extent of nitrate deposits in that 

 country as reported by Consul R. Hanna. The estimate in 1906, confirming 

 that of 1896, showed a possible production in the nitrate zone of 81,440,000 

 short tons. 



Peruvian guano (Mark Lane Express, 99 (1908), No. Jt024. PP. 525, 527, 

 figs. 3). — This is a brief general account of the history, present supply, and 

 characteristics of Peruvian guano, with suggestions as to soils and crops best 

 suited to its use and methods of preparing and mixing the guano. Data are also 

 given regarding the price and conditions of sale of the guano in England and 

 its influence on British farming. 



Phosphate deposits of Christmas Island, H. P. Woodward and E. S. Simpson 

 (Jour. Bept. Agr. West. Aust., 17 (1908), Nos. 1, pp. 552-556; 2, pp. 589-592).— 

 Explorations which indicate the occurrence of at least 50.000 cu. yds. of phos- 

 phatic shale and travertin limestone containing from 13.5 to 23.5 per cent of 

 phosphoric acid are reported. 



Deposits of phosphates in the Midland districts [of Western Australia] 

 (Jour. Dept. Agr. West. Aust., 17 (1908), No. 3, pp. 676-682).— The discovery of 

 deposits of low-grade phosphate is reported. 



Natal mineral phosphates, A. Pardy (Natal Agr. Jour., 11 (1908), No. 9. 

 pp. 1090-1092). — Analyses of 5 samples of these phosphates are given. The 

 percentage of phosphoric acid varied from 10.98 to 36.35 per cent. The richer 

 sample, however, contained a rather high percentage of fluorin, which would be 

 a drawback in the case of the use of the phosphate in the manufacture of super- 

 phosphates. 



Acetylene plant residue, A. Pardy (Natal Agr. Jour., 11 (1908), No. 8, pp. 

 9Jf7, 9^8). — An analysis of the lime residue from the generation of acetylene gas 

 is reported and its value as a fertilizer briefly discussed. The material was 

 found to contain 60.1 per cent of calcium carbonate, 29.5 per cent of calcium 

 hydroxid, and 7.S per cent of moisture, besides small amounts of magnesia, 



