The economics of petroleum . into lul)rlcating production. The Railroad Demand for Lubricants.—The lubrication require-ments of American railroads have been largely met by the products of. 1911 1912 1913 1914 1915 1916 1917 1913 1919 1920 Fig. 84.—Percentage analysis of the automotiveconsumption of lubricating oils in the UnitedStates, 1910-1920. 178 LUBRICATING OILS one company, and this condition still prevails though not to suchan exclusive degree as was the case ten to fifteen years ago. Theconsumption of lubricating oils by American railways may be roughlyestimated from data published by
The economics of petroleum . into lul)rlcating production. The Railroad Demand for Lubricants.—The lubrication require-ments of American railroads have been largely met by the products of. 1911 1912 1913 1914 1915 1916 1917 1913 1919 1920 Fig. 84.—Percentage analysis of the automotiveconsumption of lubricating oils in the UnitedStates, 1910-1920. 178 LUBRICATING OILS one company, and this condition still prevails though not to suchan exclusive degree as was the case ten to fifteen years ago. Theconsumption of lubricating oils by American railways may be roughlyestimated from data published by the Bureau of Corporations in1906, and brought reasonably up to date on the basis of car mileagestatistics issued by the Bureau of Railway Economics. While notexact, the results of this calculation arc given in the following table: Table 77.—Estimated Consumption of Lubricating Oil by the RollingStock of the United States Railways (Millions of (jallmis) Year Valve Oil Engine, Coachand Car Oil Total 1910 1911 1912 1913 1914 1915 1916 1917 It is apparent from this table
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