. Street and electric railways, 1902 .. . ,152 24,565 17,340 other. 49 4,151 109,163 116,115 80,379 It will be seen from Table 87 that 221 street railwaysystems whose current was employed exclusively instreet car operation, with 16,771 cars in operation, hada generating dynamo capacity of 366,301 horsepower,an average per car of horsepower. In cities above25,000 population the generating capacity per car variedvery little, being horsepower per car for the largercities over 500,000 population; 17 horsepower per car in cities between 100,000 and 500,000; and in citiesof
. Street and electric railways, 1902 .. . ,152 24,565 17,340 other. 49 4,151 109,163 116,115 80,379 It will be seen from Table 87 that 221 street railwaysystems whose current was employed exclusively instreet car operation, with 16,771 cars in operation, hada generating dynamo capacity of 366,301 horsepower,an average per car of horsepower. In cities above25,000 population the generating capacity per car variedvery little, being horsepower per car for the largercities over 500,000 population; 17 horsepower per car in cities between 100,000 and 500,000; and in citiesof between 25,000 and 100,000. In a group of 50 sys-tems in communities with a population under 25,000,and with only 836 cars, the generating capacity rose horsepower, indicating the relatively greater inef-ficiency which necessarily attends the operation of avery small system, as compared with a larger one. Itis not to be understood, however, that all this provision TYPICAL WATER SIDE STREET RAILWAY POWER HOUSE, BALTIMORE, MANHATTAN ELEVATED RAILWAY STATION AND POWER SUBSTATION, NEW YORK CITY. POWER HOUSES, EQUIPMENT, AND OUTPUT. 225 per car was necessarily called upon at one and the sametime, or was required all of the time, although theremay be busy hours of heavy load when all the machineryis called upon to take its share of duty. It is impor-tant to point out in this connection that the interurbanlines, of which 31 are specifically considered, have pro-vision per car much greater than in the cities. The fast, long interurban lines, with 1,167 cars, hada total generating capacity of 56,030 horsepower, anaverage per car of 48 horsepower. This is very nearlythree times as much as the provision made in urbancenters of between 100,000 and 500,000 are two chief reasons for the great is the heavier weight of the modern interurbancar, as well as the large amount of bulky freight andexpress business now carried by them; and the secondi
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