put upon the top of the condensing gas-holder, a mahogany bear aloft, almost as high as the ceiling, a hollow copper worth while to point out that, on the contrary, it clearly ball as large as an egg; and sometimes an egg itself is used. ball will be supported upon the column of gas as it is… … minute aperture, fixed on the top of the vessel.being opened, " slightly wider " at one end the condensed air rushes out in a stream. inch to one and a half inch above the opening, we may in- than the other, it is at any rate slightly longer. If a wooden ball of the size of a schoolboy's marble,…
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