Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 497
nd top of embankments arethe same, 31 4, and other dimensions equally ample. Eail sections are of infinite variety and weights, adapted to the class ofrailroads on which they are to be used, and the loads and speed of trains towhich they are to be sabjected. Eor roads of the^common gauge, the… … With the increase of speed on railways, the tracks on the larger roads arebeing laid with rails of 100 pounds to the yard, and wrought-iron ties are beingtested, but experiments on them with very heavy trains and high speeds havenot yet been conclusive as to their adoption. ENGINEERING…
Mechanical drawing
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