itrequires, to come from ? All the tubes and vessels throughwhich the liberated gas passes become intensely cold, theair in the immediate neighborhood is robbed of all its mois-ture which falls as snow, but even the heat from thesesources is hot enough, and it gets the remainder from itself.The… … Dr. Tyndall then allowed s»me of the gas to blflw througha suitable vessel (Fig. 5) for retaining the solidified gas, andin a few minutes exhibited the carbonic acid snow in con-siderable quantity. The recipient for the solid carbonic acid is an ingeniouslyconstructed draw out box, the contrivance…
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