In 1831 there were 51 miles of railway in the United States; in 1872 there were 60,000 miles of railway.]] [Footnote k: In 1832 each inhabitant of Michigan paid a sum equivalent to 1 fr.

22 cent.

(French money) to the post-office revenue, and each inhabitant of the Floridas paid 1 fr.

5 cent.

(See "National Calendar," 1833, p.