ascend nearly to the tops, these tops being of course closed, so as to
prevent the escape of the steam. Through these pipes the steam descends
with its customary force, and is conducted by one main pipe all along
under the carriage to the end of the platform, which is, in point of
fact, the _water tank_, where it turns under till it reaches two
large branch pipes which communicate with the cylinders, from which the
pistons move and give motion to the machinery. The cranks of the axle
are thus set in action, and the rotatory movement is given to the
wheels. By the power thus engendered also a pump is worked, and which,
by means of a flexible hose, pumps the water into the boiler, keeping
the supply complete. The tank and furnace, it is calculated will hold
sufficient water and fuel for one hour's consumption, the former being
sixty gallons."

The vehicle resembles the ordinary stage-coaches, but is rather larger
and higher. Coke or charcoal are to form the fuel, by which means smoke
will be avoided; the flues will be above the level of the seated
passenger, and it is calculated that the motion of the carriage will
always disperse the heated rarefied air from the flues.

The present carriage would carry six inside and fifteen outside
passengers, independent of the guide, who is also the engineer. In front
of the coach is a very capacious boot; while behind, that which assumes
the appearance of a boot is the case for the boiler and the furnace.
The length of the vehicle, from end to end, is fifteen feet, and, with
the pole and pilot-wheels, twenty feet. The diameter of the hind wheels
is five feet; of the front wheels three feet nine inches; and of the
pilot-wheels three feet. There is a treble perch, by which the machinery
is supported, and beneath which two propellers, in going up a hill, may
be set in motion, somewhat similar to the action of a horse's legs under