quite out of Liverpool, the whole way under the town,
to the docks. This tunnel is for wagons and other
heavy carriages; and as the engines which are
to draw the trains along the railroad do not
enter these tunnels, there is a large building at
this entrance which is to be inhabited by steam-engines
of a stationary turn of mind, and different constitution
from the traveling ones, which are to propel
the trains through the tunnels to the terminus
in the town, without going out of their houses themselves.
The length of the tunnel parallel to the one we passed
through is (I believe) two thousand two hundred
yards. I wonder if you are understanding
one word I am saying all this while! We were
introduced to the little engine which was to drag
us along the rails. She (for they make these
curious little fire-horses all mares) consisted
of a boiler, a stove, a small platform, a bench, and
behind the bench a barrel containing enough water to
prevent her being thirsty for fifteen miles,—the
whole machine not bigger than a common fire-engine.
She goes upon two wheels, which are her feet,
and are moved by bright steel legs called pistons;
these are propelled by steam, and in proportion
as more steam is applied to the upper extremities
(the hip-joints, I suppose) of these pistons, the
faster they move the wheels; and when it is desirable
to diminish the speed, the steam, which unless
suffered to escape would burst the boiler, evaporates
through a safety-valve into the air. The
reins, bit, and bridle of this wonderful beast is a
small steel handle, which applies or withdraws
the steam from its legs or pistons, so that a
child might manage it. The coals, which are its
oats, were under the bench, and there was a small
glass tube affixed to the boiler, with water
in it, which indicates by its fullness or emptiness
when the creature wants water, which is immediately
conveyed to it from its reservoirs. There is a
chimney to the stove, but as they burn coke there
is none of the dreadful black smoke which accompanies
the progress of a steam vessel. This snorting
little animal, which I felt rather inclined to pat,
was then harnessed to our carriage, and, Mr.
Stephenson having taken me on the bench of the
engine with him, we started at about ten miles an
hour. The steam-horse being ill adapted for going
up and down hill, the road was kept at a certain
level, and appeared sometimes to sink below the
surface of the earth, and sometimes to rise above
it. Almost at starting it was cut through
the solid rock, which formed a wall on either
side of it, about sixty feet high. You can’t
imagine how strange it seemed to be journeying on thus,
without any visible cause of progress other than
the magical machine, with its flying white breath
and rhythmical, unvarying pace, between these
rocky walls, which are already clothed with moss
and ferns and grasses; and when I reflected that these
great masses of stone had been cut asunder to
allow our passage thus far below the surface