. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . o the exhaust;this air escaping will eventually carry the Air and water are the great natural dis-tributors of mechanical energy. The cur-rents of rivers represent a portion of themechanical equivalent of solar heat ex-pended in raising the masses of waterthat flow through their channels to theclouds. The winds that propel our shipsand wind motors are the product of solarenergy also. The chief and most eco-nomical means by which the heat, gen-erated in the combustion of fuel can beconverted i
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . o the exhaust;this air escaping will eventually carry the Air and water are the great natural dis-tributors of mechanical energy. The cur-rents of rivers represent a portion of themechanical equivalent of solar heat ex-pended in raising the masses of waterthat flow through their channels to theclouds. The winds that propel our shipsand wind motors are the product of solarenergy also. The chief and most eco-nomical means by which the heat, gen-erated in the combustion of fuel can beconverted into mechanical energy for thepropulsion of machinery is water, whichthe heat converts into steam. We notice in an industrial paper oftwenty-five years ago that one ofthe worst grievances complained of byworkmen in Pennsylvania was the storeorder system. If that system haschanged since that time it has beenfor the worse. It has also extended itselfinto many other States in the store order system tends to keepworkmen poverty stricken and under thethumb of petty bosses. It also tends to. BOILER OF ENGINE ON SWEDISH ST.\TE K.\ILW.\VS. weight of the valve, preventing it cuttingthe seat, and so on. But, on the otherhand, the piston valve cannot be raisedfrom its seat as can the D-slide valve, andwhen it is allowed to travel at full strokedrifting down a long grade, it should beobvious vifhat the consequences will engineer that will give strict attentionto the carrying of the reverse lever ofhis piston valve engine, one trip with an-other, it may be safe to assume that atthe end of a year he will save to his com-pany 50 per cent, of his salary. We havebeen preaching the above doctrine onthree of the divisions of the road south ofBradford for the past 10 months, and theresults thus far has been very gratifying;the engines are riding easier, not so muchpound; in fact, no pound due to compres-sion driving the rods and driving journalsback against the boxes. And to my
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