. Railway master mechanic [microform] . /878 80 82 84 8b 88 90 92 94 96 98 /900 OZ Fig. 4—Weight on Drivers. wherein the tube heating surface has been so rapidly en-larged that the firebox surface now constitutes a smallerpercentage of the total surface than heretofore. In con-trast to this the firebox heating surface of the switchengines constitutes a larger portion of the total in loco-motives of more recent design. Nor has tube length

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Keywords: ., bookcentury1800, bookdecade1890, bookidrailwaymaste, bookyear1895