On my return, I gave Mr. Jacob Perkins, who
is now in England, a hint of this plan of condensation, and it has
there obtained him great celebrity. This fact I should not have thought
it worth while to mention, had he not taken the sole merit of the
invention to himself; at least I cannot hear that in his numerous public
notices he has ever mentioned my name.
But to return. A small circular window, made of a single piece of thick
clear glass, was neatly fitted on each of the six sides. Several pieces
of lead were securely fastened to screws which passed through the bottom
of the machine; as well as a thick plank. The screws were so contrived,
that by turning them in one direction, the pieces of lead attached
to them were immediately disengaged from the hooks with which they
were connected. The pieces of lunarium were fastened in like manner
to screws, which passed through the top of the machine; so that by
turning them in one direction, those metallic pieces would fly into
the air with the velocity of a rocket. The Brahmin took with him a
thermometer, two telescopes, one of which projected through the top
of the machine, and the other through the bottom; a phosphoric lamp,
pen, ink, and paper, and some light refreshments sufficient to supply
us for some days.
The moon was then in her third quarter, and near the zenith: it was, of
course, a little after midnight, and when the coppersmith and his family
were in their soundest sleep, that we entered the machine.
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