A text-book on chemistry. For the use of schools and colleges (1866)
Draper, Henry, 1837-1882 · New York, Harper & brothers · leaf 234
PKEPARATTON OF OXYGEN. 221 limited by the expense and weight of the quicksil-ver. Oxygen. 0=8. Oxygen gas is probably the most abundant of theelements. It constitutes about one third of the weightof the solid mass of the earth, eight ninths of that ofthe waters of the sea, and one fifth of the… … Fig. 189. necting with the retort a receiver, 5, from which therepasses a bent tube, c, dipping below the water of a pneu-matic trough, g. On raising the temperature by a lamp,the oxide is decomposed into metallic mercury and oxy-gen gas; the former distills into the receiver, 5, and thelatter…
Chemistry · Physics
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