. Railway mechanical engineer . from lb. to 40 lb., andthe net coal consumption (deduction made for lighting up)from lb. to lb. In some cases as much as 1, coal were shovelled in per hour and for each sq. grate. Compound locomotive 6204 hauled trains of 646 tons at mans work. The coal tank is entirely in front, with a bot-tom sloping at an angle of 45 deg. On both sides, auxiliary-tanks are provided for briquettes, which are also close athand. Owing to the moderate diameter of their wheels, theseengines may be used for every kind of service; they negotiateh
. Railway mechanical engineer . from lb. to 40 lb., andthe net coal consumption (deduction made for lighting up)from lb. to lb. In some cases as much as 1, coal were shovelled in per hour and for each sq. grate. Compound locomotive 6204 hauled trains of 646 tons at mans work. The coal tank is entirely in front, with a bot-tom sloping at an angle of 45 deg. On both sides, auxiliary-tanks are provided for briquettes, which are also close athand. Owing to the moderate diameter of their wheels, theseengines may be used for every kind of service; they negotiateheavy freight as well as fast passenger trains. This hasproved a great convenience on the Nord, where in the fallof the year the freight traffic is heavy, while in summer andon holidays a large number of supplementary expresses, allheavy, have to be run. It was not thought advisable to build more locomotives ofthe Baltic type before a longer experience; for this reason20 Pacific type engines were placed in service at the end of. Pacific Type Locomotive Used on the French State Railways an average speed of mile> to miles an hour fromLaroche to Blaisy; 2,425 hp. was indicated and by the dynamometer on the drawbar. The waterconsumed per hour and indicated horse power varied lb. to lb., the gross coal consumption from to lb. The rate of combustion never exceeded 1, per hour and for each sq. ft. of grate. 1 French hp. equals ft. lb. per second. 1912 with the same diameter of wheels that the Atlanticshad, but with a greater power and more adhesive principal dimensions of these Pacifies are given inTable II. One peculiarity of these engines is the use of by-passeson their high pressure cylinders instead of air relief the results of experiments on the first of these engines, *For description see American Engineer, April, 1913, page 190. 234 RAILWAY MECHANICAL ENGINEER Vol. 90, No.
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