. Electric railway journal . minute and compressing it to six atmos-pheres. Each compressor consists of two pumps and twomotors, although one set is sufficient for normal operation. Tests of a very severe character gave very good temperature rise of the motor copper at a train speedof 46 and with the locomotive pulling 21,000 lb. forone hour was deg. C. With a train of 383 tons and up agrade of per cent, the locomotive accelerated to in 267 seconds. The locomotive shows a consumptionof about 35 watt-hours per ton mile. The other locomotivesadded to the eq
. Electric railway journal . minute and compressing it to six atmos-pheres. Each compressor consists of two pumps and twomotors, although one set is sufficient for normal operation. Tests of a very severe character gave very good temperature rise of the motor copper at a train speedof 46 and with the locomotive pulling 21,000 lb. forone hour was deg. C. With a train of 383 tons and up agrade of per cent, the locomotive accelerated to in 267 seconds. The locomotive shows a consumptionof about 35 watt-hours per ton mile. The other locomotivesadded to the equipment have been previously described andare of the 2-C-2 Brown-Boveri and Oerlikon types. The maindimensions and weights of this type of locomotive are: Diameter of drivers 64 in. Diameter of pilot wheels 38 in. Length over buffers 43 ft. 10 in. Total weight 202,750 lb. Weight on drivers 99,100 lb. Weight of mechanical parts 110,200 1b. Weight of electrical apparatus 92,550 1b. 818 Electric Railway Journal Vol. 58, No. 19. November 5, 1921 Electric Railway Journal 819 Superpower Survey Shows Advantages of SystemIncluding Electrification Report of W. S. Murray and Others for Geological Survey Outlines Savings Possible by Co-ordinatingand Supplementing Existing Utilities—Recommends Electrification of 19,000 Milesof Trunk Lines in Zone and Shows Resulting Economies UNDER the title A Superpower System for theRegion Between Boston and Washington, theUnited States Geological Survey, Department ofthe Interior, has just issued the report of its specialsuperpower survey made during the year July 1, 1920, toJune 30, 1921. This special report or study was madeby a temporary organization within the United StatesGeological Survey, headed by W. S. Murray and financedby an appropriation of $125,000 by the government, towhich was added $26,000 contributed by utilities andindustries within the Superpower Zone. One of the outstanding sections of this report hasto do with the desirability of
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