Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts (1880)
D. Appleton and Company, Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 694
the same as on ordinary steam railroads. It traverses numerous tunnels (see Tunnels) and opencuts. The main difficulty in its construction was the avoidance of the immense network of sewer-pipes which underlie the metropolis. The present length (1879) of all the lines is over 20 miles, 3660. … -- . -. ..T. . r=s »/J1f*61 and the aggregate number of passengers carried annually is about sixty millions. A short under-ground railroad is also in operation in Constantinople, Turkey. In New York City, the tracks of the railways which have their terminus at the Grand Central 664 RAILS. Depot in…
Mechanical engineering -- Dictionaries
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