E X. 



A. 



ACCUM, Mr. his lectures, 78 



Achard's manufacture of sugar from 

 beat, 311 



Acid, oxalic, experiments on, 14, 8G 



Acton, Mr. J. his examiaation of a 

 stone of the calcareous species, called 

 'Thunder Pick', 300—His simple 

 improvement ia the common still, 

 358 



Advianople red, 44 



Air, nature, use, and properties of, 159 



Air pumps, 63, 161 



Air-tight hinge, 61 



Albiness, early account of one, 203 



Alburnum, see Bark. 



Alcohol, composition of, 222— Analysis 

 of, 225, 259, 321 



Alkalies, discovery of metals in, 68, 

 231 — Decomposition of, 69 — Com- 

 ponent parts of, 139 



Ammonia, unexpected production of, 

 290 



Analysis of iron ores in Burgundy and 

 Tranche Comte, &c. 32 — Of metallic 

 sulphurets, 142 — Of a carbonate of 

 lime from Pesey, 150 — Of alcohol 

 and sulphuric ether, 222, 259, 321 

 .i-Of the thunder pick, 301— Of 

 grape sugar, 341 



Arcs of vibration, modes of equalizing, 

 51 



Avogadfo, A. on the state in which a 

 stratum of nonconducting matter 

 must be, w^hen interposed between 

 two surfaces endued with opposite 

 electricities, 278 



Auarie, M. his chemical examination 

 of the stalk of Indian corn {Zea Mays 

 of Linnaeus) to iiscertaiu whether the 

 Vofc. XXI. 



saccharine matter it contains be capa- 

 ble of crystallization, J 53 

 Acbuisson, M. de, on some granatoid 

 Lavas, 2'. 9 



Bancks, Mr. his observations on the 

 exhausting machine of Dr. T. S, 

 Traill, 1(1 1 



Banks, Sir J. letter to, on the incon- 

 trojcrtibiliiy of bark into alburnum, 

 5 — Communication from, on the ap- 

 plication of coal gas to economical 

 I^iirposes, 94 



Banks, Mr. account of his instruments 

 employed for the iSlcteorological 

 Journal, 79 



Bark not convertible into alburnum, 3 



Barlow, P. Esq. on polygonal numbers, 

 118— Answered, 241 



Baron on alumine, CG7 



Barraud, Mr. 2-2,6 



B, H. on the doctrines of chance, 121 

 — Answered, 210 



Beccaria, 283 



Beccher, on sugar, 343 — On the rela- 

 tion between metals and earths, 367 



Beddoes, Dr. on vital air, 68 — On cer- 

 tain points of history relative to the 

 component parts of the alkalies, with 

 observations relating to the composi- 

 tion of the bodies termed simple, 

 lSg>_On alkalies, 232 



Bergman's experiments on oxalic acid, 

 14 — On barytes, 367 



BerthoUet's experiments on oxalic acid, 

 14 — His analysis of a carbonate of 



I lime from Pesey, 150 



Berzelius, M. 373 



Boat, an improved secure one, for sail- 

 ing, 124 



b Bodiee 



