INDEX. 117 



Latour (M. D.) on the effects obtained by the simultaneous 

 application of heat and pressure, to certain liquids, xvi. 98. 

 Experiments of, with certain substances under high pressures, 

 156 



Laugier (M.) on the composition of acirolites, x. 189 



analysis by, of meteoric stones fallen in Poland, xviii. 



389 ; and of the volcanic saline matter thrown out of Vesu- 

 vius, 407 



. new mineral discovered by, xix, 15G 



Laurel, nature and properties of the native oil of, xviii. 47 

 Lava, observations on the primitive matter of, ii. 158 



of Vesuvius, examination of, xvi. 180 



Lavoisier's chemical discoveries, notice of, iv. 23S 

 Lead-mines, geological account of, at Dufton, ii. 198 



of England and Wales, present state of, vi. 3t7 



and its compounds, account of, v. 69. Tests for detecting it 



in water, 73. Sugar of, not used in adulterating wines, ib. 

 Oxide of crystallized, 363. Sheet, Chinese mode of making, 

 3G9 



— and tin, mutual precipitation of, vi. 363 



— native, notice of, viii. 357. Volatility of the oxides of, 379, 

 New acetate of, ib. 



— chromate of, applied as a dye to silk, x, 451, xi. 392. Appli- 

 cation of, in the arts, xix. 347 



— analysis of the ferro-prussiate of, xi. 210 



— and antimony, analysis of a cupreous sulphuret of, xii. 

 34. Increase of weight during calcination accounted for, 

 295. On the disappearance of the celestial heat in, 297. 



— weight, if not increased by the consumption of the aerial parts, 

 xiii. 136 ; nor by soot, 138; nor from the vessel in which it is 

 calcined, 140; nor from the vapours of the charcoal ; nor from 

 the volatile salt of the charcoal, 278 ; nor from volatile mercu- 

 rial salt, 280 ; nor from moisture, ib. ; but from the mixture of 

 the thickened air, 282. Why the calx of lead does not increase 

 in weight adinJinUum^ ib. Whether it increases in weight like 

 tin, 284 



