Population of Philadelphia City and County since the Foundation, estimated and returned.

[The census of 1777 was taken by order of Sir William Howe, when the British army was in possession of the city. At that time many Whigs and patriots were absent, and it is estimated that the population in the same year before the entry of the British was about 30,000.

RAILROADS IN PENNSYLVANIA.

NAME OF RAILROAD.

Length of
Main Line.

Length of Line in Penn'a.

Allegheny Valley, [Pittsburgh to Oil City;
Redbank to Driftwood,]

Allentown [to Port Clinton, ] [35.8 miles, ].

Atlantic and Great Western,

Bachman Valley,

Delaware and Hudson Canal and Railroad,
Delaware, Lackawanna, and Western,
Delaware River and Lancaster,

Hanover and York,

Erie and Pittsburg,

Fayette County,

Frankford and Holmesburg,

Hanover Junction, Hanover and Gettysburg,

Harrisburg, Portsmouth, Mt. Joy and Lan

81.

81.

12.66

12.66

4.16

4.16

3.50

3.50