hrough the This in turn is surrounded by another air space be- by, in The Auk. regulating valve and its expansion on its return path. tween the insulating laj'er and the external vessel. A A six-inch glass at the Washburn Observatory, over- This action is so complete that the inflowing and out-… … June 22, a trial was made, steam was turned on, Fig. 3.—PORTABLE VESSEL FOB TBANSF0BTIN6 LIQUID AIB, and the compressors started. In about two hours after, liquid air was produced in such a flowing current have practically the same temperature quantity that it flowed from the outlet in almost a…
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