=================+=================+====================+=============== | | Fuel Consumption | Cost of Fuel | | Per Brake H.-P. | Per Brake Fuel | Price of Fuel | 10 Hours | H.-P. 10 Hours -----------------+-----------------+--------------------+--------------- Gasolene | 10c per gal. | 1.25 gal. | 12.5c -----------------+-----------------+--------------------+--------------- Illuminating gas | $1.00 per 1000 | 180 cu. ft. | 18c | cu. ft. | | -----------------+-----------------+--------------------+--------------- Natural gas | 25c per 1000 | 130 to 160 cu. ft. | 3.25 to 4c | cu. ft. | | -----------------+-----------------+--------------------+--------------- Producer gas, | | | anthracite | | | pea coal | $4.00 per ton | 15 lb. | 2.67c -----------------+-----------------+--------------------+--------------- Producer gas, | | | charcoal | $10.00 per ton | 12 lb. | 5.35c -----------------+-----------------+--------------------+--------------- Bituminous coal, | | | ordinary | | | steam engine | $3.00 per ton | 80 to 100 lb. | 10.7 to 13.4c =================+=================+====================+=============== A photograph of a small (2 H.P.) gas engine made by the Foos Gas Engine Co. with pump complete is shown in Fig. 47. This pump will lift forty gallons of water per minute, with a suction lift up to twenty-five feet, to a height of about seventy-five feet above the pump. The pump gear can be thrown out of connection with the engine, so that the latter can be used for other purposes where power is desired. _Steam pumps._ [Illustration: FIG. 47.--A gas engine.]