The London, Edinburgh and Dublin philosophical magazine and journal of science . Fig. 4. hip 1 j Phil. Mag. Ser. 6, Vol. 5, PL XIY. £ / ^ f Ftg. 6. 200 240 260 NT.) v> iu SO QZ oo 2 2 60 Z] 5v \\\ \W A\v \ V :\5 V \<2. *Yp Vug, \tVo v \ \l 100 - 120 - 130 - 140 TEMP£RATUR£(CENT.) 150 ^0 -150 -160 I Phil, Mag. Ser. 6, Vol. 5. PI.

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Keywords: ., bookcentury1800, bookdecade1840, bookidlondon, booksubjectscience