. The Locomotive. twenty weighed inexcess of 6,000 tons. The tenders have cylindrical water tanks and asmaller tank at the front end to carry the oil fuel which all SouthernPacific locomotives burn. The oil is sprayed into the furnace by ajet of steam and the fire is controlled by means of valves placedwithin easy reach of the fireman. 112 THE LOCOMOTIVE. [October, Various modern devices are applied to increase the efficiency andcapacity of the locomotives. Before entering the boiler, the feed wateris heated; and the steam is also highly superheated before it entersthe steam cylinders. An auxi
. The Locomotive. twenty weighed inexcess of 6,000 tons. The tenders have cylindrical water tanks and asmaller tank at the front end to carry the oil fuel which all SouthernPacific locomotives burn. The oil is sprayed into the furnace by ajet of steam and the fire is controlled by means of valves placedwithin easy reach of the fireman. 112 THE LOCOMOTIVE. [October, Various modern devices are applied to increase the efficiency andcapacity of the locomotives. Before entering the boiler, the feed wateris heated; and the steam is also highly superheated before it entersthe steam cylinders. An auxiliary engine known as a booster isattached to the rear truck for increasing the hauling power when start-ing heavy trains and climbing steep grades. The locomotive is reversedby a power operated device which relieves the engineer of consider-able manual labor. Throughout the entire journey, each locomotive was manned by anexperienced engineer, who was personally in charge of the locomotiveto which he was The Prosperity Special. It was only possible to haul twenty of these heavy locomotivesin a single train, and it required several pulling and pushing locomo-tives on level stretches, while in passing over the Allegheny Mountainswest of Altoona, additional helping power was needed. No less thansix engines were necessary to move the train around the Horse-Shoe Curve. (Continued on Page 119.) THE LOCOMOTIVE. U3 The Domestic Fuel Problem Fuels are suitable for household use in the following order:anthracite, anthracite briquets, coke, bituminous briquets, low volatilesteam coals (such as Pocahontas or New Riven, true bitumin us or gas coals, lignite, peat and wood. Coke is a clean burning and convenient fuel for household useand if available is a good substitute for anthracite, but there seemslittle prospect that much coke will be obtainable for household usethis winter. Aiuhracite briquets are a very satisfactory household fuel if wellmade and are now available in some l
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