Third Line. Baltimore and Ohio Railroad.

Still less than Philadelphia, could Baltimore think of a continuous canal to the Ohio. Wishing to avoid the transhipments which are necessary on the Pennsylvania line, the Baltimoreans decided on the construction of a railroad extending from their city to Pittsburg or Wheeling, the whole length of which would be about 360 miles. It is now finished as far as Harper’s Ferry on the Potomac, a distance of 80 miles, and the company seem to have given up the design of carrying it further. It will here be connected with the Chesapeake and Ohio Canal, of which I shall speak below, as the Columbia railroad is connected with the Pennsylvania canal. It is probable, that, on approaching the crest of the Alleghanies, the canal will in turn give away to a railroad across the moun tains, and thus the Maryland works will be similar to the Pennsylvania line.