every "ten minutes," and are as well filled with passengers as those of
railroads on the surface of the earth. The cars are comfortably lighted,
so that after one has taken his seat and the train begins to run along, it
resembles night-traveling so perfectly, that the difference is scarcely
perceptible.

Of all modes of travel, these underground railroads afford the quickest,
cheapest, safest and most convenient manner of transit.

This great metropolis includes the cities of London and Westminster, the
borough of Southwark, and thirty-six adjacent parishes, precincts,
townships, &c. It covers an area of 122 square miles, and has a population
of about 4,000,000, that of the _City of London proper_ being no more than
about 75,000. Murray's Modern London contains the following statistics:

"The Metropolis is supposed to consume in one year 1,600,000 quarters of
wheat, 300,000 bullocks, 1,700,000 sheep, 28,000 calves, and 35,000 pigs."
(If these animals were arranged in a double line, they would constitute a
drove over a thousand miles long!)

"One market alone (Leadenhall) supplies about 4,025,000 head of game.
This, together with 3,000,000 of salmon, irrespective of other fish and
flesh, is washed down by 43,200,000 gallons of porter and ale, 2,000,000
gallons of spirits, and 65,000 pipes of wine. To fill its milk and cream
jugs, 13,000 cows are kept. To light it at night, 360,000 gas-lights
fringe the streets, consuming, every twenty-four hours, 13,000,000 cubic
feet of gas; while the private consumption of gas in a year amounts to
10,000,000,000 cubic feet. Its arterial or water system supplies the
enormous quantity of 44,383,328 gallons per day, while its venous or sewer
system carries off 9,502,720 cubic feet of refuse. To warm its people and