Around Philadelphia, in addition to the great works extending to
Columbia, Amboy, and Baltimore, already mentioned, are 1. The Trenton
railroad; 2. The Norristown and Germantown road, designed for
passengers and for the accommodation of some manufacturing villages,
such as Manayunk, 16 miles in length; and 3. That of West Chester, a
branch of the Columbia railroad, 9 miles in length, designed for the
supply of the markets of the city. There are also several railroads
running through the city, of which the rails are laid on the level of
the street, and on which horse-cars only are used.