h reach down to the bottom of the vessel. Bend 127-328] CHANGE OF STATE. LIQUID TO VAPOUR. 147 one of these tubes to form a siphon by which the bottle canbo emptied. On emptying the bottle by this siphon air isdrawn in through the other tube, and, when the bottle iscompletely emptied, a known… … Fig. 57. Another glass tube passing to the bottom of this bottle isconnected with the drying tubes. Two of these, (7, Dt placedone behind the other, are used. When air passes through,most of its moisture is absorbed by the first drying tube ; theincrease of weight therefore of the second tube C…
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