ar aloft, almost as high as the ceiling, a hollow copper worth while to point out that, on the contrary, it clearly ball will be eupeered upon the column of gas as it is allowed ball as large as an egg; and sometimes an egg itself is used. proves its fallacy. to escape; and when the ball is at 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 schoclboy’s marble, flame the gas, and still the ball…
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