. The agricultural gazette of New South Wales. Agriculture; Agriculture -- Australia New South Wales. 872 Agricultural Gazette of [Nov. 2, 1908. Cominencing witli a imxlrst experimental jilaiit (if oiilv -?") liorse-power, operations expanded i-apidly, until a factory was Imilt at Notodden, in the Hittersdal, with a horse-power of '2. IOC. supplied by the Tinnfos ^^'aterfall. Shortly after this came into operation it became necessary to incic^ase the output tenfold in older to meet the demand for nitrates, and another water- fall, capable of l^G,()()() horse-power, was ci^lled int
. The agricultural gazette of New South Wales. Agriculture; Agriculture -- Australia New South Wales. 872 Agricultural Gazette of [Nov. 2, 1908. Cominencing witli a imxlrst experimental jilaiit (if oiilv -?") liorse-power, operations expanded i-apidly, until a factory was Imilt at Notodden, in the Hittersdal, with a horse-power of '2. IOC. supplied by the Tinnfos ^^'aterfall. Shortly after this came into operation it became necessary to incic^ase the output tenfold in older to meet the demand for nitrates, and another water- fall, capable of l^G,()()() horse-power, was ci^lled into requisition. Other similar projects are now in coui-seof deNclopmciA in Scandinavia, and a large water-power factoiy is also bciny' erected in Interior of the Birkeland-Eyde Furnace. Showing the striking of the electric flame. The generating power at Notodden and Svaelgfos is produced at a cost of about 0'02") of Id , which is rather less than Sir William Crooke's estimate of 1-17 of Id. The ([uality of the lutrate of lime is quite eijual to that of Chilian saltpetre: and the Norwegian product can be mainifactured at a cost of not more than one-half the price at which the Chilian ai-ticle can l)e delivered at Hamburg or Christiana. 2. Manufacture of Calcium Cyanamide. The Birkeland-Eyde calcium-nitrate process has not been allowed to re- main in undisputed possession of the field. Another method of jntrogen is the formation of a substance calletl cyanamide by the electric heating of calcium carbide in a stream of atmospheric nitrogen. Calcium cyanamide is manufactured from the same quality of carbide as is used in making acetylene gas. Pulveiised caibidc is charged into retorts mounted in a furnace, and nitrogen is jiassed ovei' the carbide. When the carbide is saturated with nitrogen the cyanamide is extracted in the form of a hard ?cake. After being cooled this substance is pulverised, and is then ready for use. It is placed on the market untler the name
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