.'394 INDEX. 



Barium, sulphuret of, experiments on, 149 

 Barometers and Thermometers, variation of, 371, 372 

 Barometrical Measurement of the height of the sugar-loaf moun- 

 tain at Sierra Leone, 67 — 69. Of the mountain-house at 

 Ascension, 69. Of the Port-Royal mountains, Jamaica, 70. 

 Of the block-house at Fort George, Trinidad, ibid. Of the 

 Pico Ruivo in the island of Madeira, 75 — 82 

 Barytes, test for, 383 



Berthier (M.) experiments of, on sulphurets produced from sul- 

 phates, 147 — 151. Analyses of different French limestones, 

 311—314 

 BesseVs Theory of Refractions, remarks on, 356, 357 

 Bitumen, existence of, in minerals, 389 

 Books (Scientific), analysis of, 108—127; 320—348 

 Boracic Acid, effects of, on the acid fluate of potash, 308 

 BraconnoV s (M.) account of a new green colour, 309, 310 

 Brain, extraordinary affection of, cured by cold, /s-c, 8 — 1 1. 

 Breivster (Dr.), notice of a new fluid discovered by, in the 



cavities of minerals, 374, 375 

 Bridge of the Holy Trinity at Florence, observations on tlie cur- 

 vature of the arches of, 1 — 8. Economical one at Annonay, 

 136. Observations on the taking down and rebuilding of 

 London Bridge, 269 — 278. Notice of the laying of the first 

 great iron-plate for the bridge at Menai Straits, 367 

 Buckland's (Rev. William) Reliquice DiliivianoR, analysis of, with 



remarks, 337 — 347 

 Bushy (Mr.), notice of the hydro-parabolic mirror of, 137 



Cagniarel de la Tour (Baron), experiments of on llie action of 



heat and pressure on certain fluids, 145 — 147 

 Calcareous Spar, formation of, 384 

 Calcium (sulphuret of), experiments on, 149 

 Carbon, new mode of obtaining the hydriodide of, 297 — 301 

 Carbonic Acid, estimation of the quantity of, in mineral waters, 



158, 159 

 Carlsbad, analysis of the mineral waters of, 170 

 Cat, instance of electricity jn, 163 

 Charcoal (animal) action of, on lime, 384 

 Chemical Science, Miscellaneous Intelligence in, 145 — 164; 



374—385 

 Chlorine, experiments on the hydrate of, 71 — 74. Triple 



compounds of, 378. Its action on muriate of iron, ^c, 378 

 Chromic Acid, combinations of, with potash, 310, 311 

 Church (Mr.) notice of his improved printing-machine, 138 

 Cinnabar, new process for preparing, 161 

 Clarification of wine, process for, 385 

 Clouds, on the ascent of, in the atmospheie, 165, 166 



