Wright, Mark R., 1854- · London : Longmans · leaf 16
r be standingat 30 inches, or allowance must bemade for any variation. I. The Freezing-point. — Cleansnow or well-pounded ice is placed in avessel (fig. 6). The thermometer isinserted, so that it is surrounded ; it isleft for a quarter of an hour and moved,until the thread of mercury is seen…
Physics
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