Harper's New Monthly Magazine, No. VI, November 1850, Vol. IVarious
History
Harper's New Monthly Magazine, No. VI, November 1850, Vol. I
Various
American literature -- Periodicals; Civilization -- Periodicals; Culture -- Periodicals
Moral Philosophy; HUPFELD, Hebrew and Oriental Languages; GUERICKE,
Ecclesiastical History, Introduction; HERZOG, MAYER, and THILO,
Ecclesiastical History.----A new apparatus for the production of heat
has been invented by Mr. D.O. Edwards. It is named the "atmopyre," or
solid gas fire. A small cylinder of pipe clay, varying in length from
two to four inches, perforated with holes the fiftieth of an inch in
diameter, in imitation of Davy's safety lamp, is employed. The cylinder
has a circular hole at one end, which fits upon a "fish-tail" burner;
gas is introduced into the interior of the cylinder, with the air of
which it becomes mixed, forming a kind of artificial fire-damp. This
mixture is ignited on the outside of the vessel, and burns entirely on
the exterior of the earthenware, which is enveloped in a coat of pale
blue flame. The clay cylinder which Mr. Edwards calls a "hood," soon
becomes red hot, and presents the appearance of a solid red flame. All
the heat of combustion is thus accumulated on the clay, and is thence
radiated. One of these cylinders is heated to dull redness in a minute
or two; but an aggregate of these "hoods" placed in a circle or cluster,
and inclosed in an argillaceous case, are heated to an orange color, and
the case itself becomes bright red. By surrounding this "solid gas fire"
with a series of cases, one within another, Mr. Edwards has obtained a
great intensity of heat, and succeeded in melting gold, silver, copper,
and even iron. Mr. Palmer, the engineer of the Western Gas-light
Company, by burning two feet of gas in an atmopyre of twelve "hoods,"
raised the temperature of a room measuring 8551 cubic feet, five degrees
of Fahrenheit in seventeen minutes. The heat generated by burning gas in
this way is 100 per cent. greater than that engendered by the ordinary
gas flame when tested by the evaporation of water. 25 feet of gas burnt
in an atmopyre per hour, produces steam sufficient for one-horse power.
Hence the applicability of the invention to baths, brewing, &c.----At
the late meeting of the British Association, Major Rawlinson, after
enumerating many interesting particulars of the progress of Assyrian
discoveries, stated that Mr. Layard, in excavating part of the palace at
Nineveh had found a large room filled with what appeared to be the
archives of the empire, ranged in successive tables of terra cotta, the
writings being as perfect as when the tablets were first stamped. They
were piled in huge heaps, from the floor to the ceiling, and he had
already filled five large cases for dispatch to England, but had only
cleared out one corner of the apartment. From the progress already made
in reading the inscriptions, he believed we should be able pretty well
to understand the contents of these tables--at all events, we should
ascertain their general purport, and thus gain much valuable
information. A passage might be remembered in the Book of Ezra, where
Public-domain text, read in full here on John Shaqi.
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