. Fig. .'.—Tin; POWER ST.\TION AT , SWEDEN. ( kinil permission ol Meisrs. Utigmans, Green & Co.) of these power-developments is illustrated in Fig. 2. The supply of water is there derived from Lake Mos- vand, 3,000 feet above sea-level. From there the water is led for about three miles through a tunnel in the rock, to a distributing basin or reserv-oir excavated from the rock, and thence, as illustrated in Fig. 2, down ten steel pipes 4 to 7 feet wide through a fall in level of 940 feet, to the turbines at the base. Each turbine generates 14,500 horse-power, so that altogether
. Fig. .'.—Tin; POWER ST.\TION AT , SWEDEN. ( kinil permission ol Meisrs. Utigmans, Green & Co.) of these power-developments is illustrated in Fig. 2. The supply of water is there derived from Lake Mos- vand, 3,000 feet above sea-level. From there the water is led for about three miles through a tunnel in the rock, to a distributing basin or reserv-oir excavated from the rock, and thence, as illustrated in Fig. 2, down ten steel pipes 4 to 7 feet wide through a fall in level of 940 feet, to the turbines at the base. Each turbine generates 14,500 horse-power, so that altogether 145,000 horse-power is generated. After issuing from this power station, the water is again utilised through being led, in a similar manner, to a second station about 1,000 feet lower down, where a further 162,000 horse-power is developed. Still further possibilities in power generation at the first site are revealed in the surplus water seen in the photograph, which at present serves only for display. It is of interest to note that in the development of these factories in Norway, the co-operation of Germany was extended to the Norwegian Company, through the agency of the Badischc Anilin und Soda Fabrik ' and other allied organisations. Before the war, however, the German interest was withdrawn and, with some foresight, the process was installed in Germany. However, the output of the Norwegian factories, which, after 1916, exceeded 50,000 tons of ammonium ' Where the big explosion on the Rhine recently took place. nitrate annually, formed a material contribution to this countrj-'s supplies of explosives. II The experimental manufacture of steel in an electric furnace falls to the credit of this country through the work of William von Siemens, in 1878, and Ferranti, who developed the first type of induction furnace in 1887. Electric furnaces, which are now widely used for the production of steel of all classes, and which have already largely supplanted the " crucible &quo
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