Thalassa; an essay on the depth, temperature, and currents of the ocean . m temperature of the waterto which it is exposed during its descent from the surface of thesea to the bottom. For this purpose the glass tube is bent inthe shape of (J ^^ch arm of the tube terminating in a larger bulb, A, is surrounded by another bulb, B, and aboutthree-fourths of the space between the two bulbs is filled withalcohol. It is by the addition of this outer bulb, B, that theprotection of the instrument from the effects of pressure issecured. On immersion, the outer bulb receives the pressureof the w
Thalassa; an essay on the depth, temperature, and currents of the ocean . m temperature of the waterto which it is exposed during its descent from the surface of thesea to the bottom. For this purpose the glass tube is bent inthe shape of (J ^^ch arm of the tube terminating in a larger bulb, A, is surrounded by another bulb, B, and aboutthree-fourths of the space between the two bulbs is filled withalcohol. It is by the addition of this outer bulb, B, that theprotection of the instrument from the effects of pressure issecured. On immersion, the outer bulb receives the pressureof the water, and forces the enclosed alcohol into the portion ofthe intervening space previously not occupied by this liquid,thus relieving the inner bulb, A. The latter is completely filledwith a mixture of creosote, alcohol, and water, which rests uponthe mercury contained in the bend of the tube, and also fills upthe other arm and part of the bulb C. The upper part of bulbC is occupied by air, introduced, with the help of a freezing THE MILLER-CASELLA THERMOMETER, .?^?. 76^ 8e-r loe— mh.
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Keywords: ., bookcentury1800, bookdecade1870, bookidthalassa, booksubjectocean
