The water, which is the substitute for blood, is first sent from
the reservoirs into the pipes--the operation of fire soon produces
steam, which ascends through the pipes to the upper part of the
reservoir, carrying with it a portion of water into the separators,
which of course descends to the lower part, and returns to fill the
pipes which have been exhausted by the evaporation of the steam--the
steam above pressing it down with an elastic force, so as to keep the
arteries or pipes constantly full, and preserve a regular circulation.
In the centre of the _separators_ are perforated steam pipes, which
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.
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