. The street railway review . ican gas power field. To be sure, the application to railway servicehas in this country been limited; yet wc find abroad many evidence^of successful working. A prominent Kuropean engineer reported •«iyo3; Nineteen stations on tramway work, totaling 6/xx) capacity. These include Barcelona, Tunis, I.,ausannc, St. (jallcn, Poic-tiers, Orleans and Zurich, from 400 to Cxx) ,, each working oneitlier producer or town gas. As a result of the excellent expe-rience with the VValthamstow electricity :tation, 650 has beenadded to the plant for operating the new t
. The street railway review . ican gas power field. To be sure, the application to railway servicehas in this country been limited; yet wc find abroad many evidence^of successful working. A prominent Kuropean engineer reported •«iyo3; Nineteen stations on tramway work, totaling 6/xx) capacity. These include Barcelona, Tunis, I.,ausannc, St. (jallcn, Poic-tiers, Orleans and Zurich, from 400 to Cxx) ,, each working oneitlier producer or town gas. As a result of the excellent expe-rience with the VValthamstow electricity :tation, 650 has beenadded to the plant for operating the new tramway system (length .fline 9% miles, loo-lb. girder rails, 32 double deck single truck cars,double trolley) recently constructed. At Buenos Ayres, South Amer-ica, two plants, aggregating 2,240 , are at work for the Buen ijAyres Great Western and Great Southern Railways. Both useMond gas. But, eclipsing in interest probably all fomcr gas iwcr railwayundertakings is that of the Warren & Jamestown Railway system. 7S. capital cost of gas engine. You will observe that the diagonals forsteam and gas intersect at the left of the diagram. The interpreta-tion of this is that at this point, with coal costing cents per mil-lion B. t. u., or about 90 cents per ton, both plants can deliver powerat the same cost, or, in other words, we cannot afford to use gisplant with cheaper coal. Fig. 12 expresses this saving in per centof excess capital cost of gas over steam plant. Thus, with coal at$, the annual saving is 30 per cent of the original excess. Upon the assumption of equal labor, supplies and repair cost;,it is quite evident that any excess fixed charges on the gas plant willfix a definite economic limit of saving over steam, and it thus occuSthat gas will be more effective where fuel is not dirt cheap. If, how-ever, a gas plant can effect a saving in the cost of labor, supplies and now under construction. As the details may not be entirely familiarto you, a brief review
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