In order to remove this
serious evil, a large stone oven, cased with cast iron, in which
all our bread was baked daring the winter, was placed on the main
hatchway, and the stovepipe led fore and aft on one side of the
lower deck, the smoke being thus carried up the fore hatchway. On
the opposite side of the deck an apparatus had been attached to
the galley-range for conveying a current of heated air between
decks. This apparatus simply consisted of an iron box, about fifteen
inches square, through which passed three pipes of two inches
diameter, communicating below with the external air, and uniting
above in a metal box, fixed to the side of the galley-range; to
this box a copper stovepipe was attached, and conveyed to the
middle part of the lower deck. When a fire was made under the
air-vessel, the air became heated in its passage through the three
pipes, from which it was conveyed through the stovepipe to the
men's berths. While this apparatus was in good order, a moderate
fire produced a current of air of the temperature of 87 deg., at the
distance of seventeen feet from the fireplace; and with a pipe of
wood, or any other imperfect conductor of heat, which would not
allow of its escaping by the way, it might undoubtedly be carried
to a much greater distance.
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