. American engineer and railroad journal . r the Companys engineer to go over theground, and in B hasty manner select the general course ofthe riiail, and at the same time gather a tolerably correct ideaof the topography of the country. A sketch of the desiredline would then be laid down on the section map, and a pre-liminary line run and the levels taken ; then, if the resultcame within the prescribed limits of grades, curves and ex-cavations, the work would be handed over to the the spur were to be tributary and the logs were to he sentover the main line, the grades would be li
. American engineer and railroad journal . r the Companys engineer to go over theground, and in B hasty manner select the general course ofthe riiail, and at the same time gather a tolerably correct ideaof the topography of the country. A sketch of the desiredline would then be laid down on the section map, and a pre-liminary line run and the levels taken ; then, if the resultcame within the prescribed limits of grades, curves and ex-cavations, the work would be handed over to the the spur were to be tributary and the logs were to he sentover the main line, the grades would be limited to 200 ft. tothe mile, and the curves to 12 ; but if the line is operated byengines belonging to the owners of the property, and the carsare the open rack logging cars, these curves and grades aregreatly exceeded. We have seen cases where the grades haverisen to as much as 290 ft. to the mile, and the curves to Is .In such cases as this the Shaw locomotive is usually employed,and this machine, with its flexible wheel-base, has shown. LOGGING CAR IN USE ON THE FLINT & PERE MARQUETTE RAILROAD. designed to meet the demands, and were quickly substitutedfor the truck and sled hauled by horses. In a few years this log-carrying trade developed into a busi-ness of great magnitude, though it has fallen off very con-siderably as the depletion of the forests have been carried for-ward to what might be called completion. At one time thewhole of the pine-bearing portion of the southern peninsulaof Michigan was pretty thoroughly netted with logging rail-roads of one description or another. These roads varied fromthe branches of the main lines of traffic, upon which regulartrains were run for passengers and miscellaneous freight, orthrough the several grades of branches, spurs, private linesand mill sidings. The larger branches presented no novel orpeculiar features, and were usually constructed with a viewto a permanence that would in the future be suitable for regu-lar railroad work.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
