( 383 ) 
INDEX. 
Achromatic object-glasses. Professor Barlow’s remarks on the practi- 
cal construction of, 1, 311. 
Acoustics, notices in, 167* 
Adamson, Rev. James, his sketch of the extent of our information re- 
specting rail-roads, 100. 
Alexandria, notice respecting its commerce, 377- 
Althcea rosea, blue and green colours derived from, 376. 
Anaplotherium commune discovered in the Isle of Wight, 190. 
Anthropology, notices in, 191. 
Arts, notices in the, 195, 370. 
Ascension, Island of. Captain Campbell’s remarks on its geognosy, 47* 
Astronomy, notices in, 166, 355. 
Atlas, Edinburgh, Geographical and Historical, notices regarding it, 
169, 359. 
Atomic system, notice respecting Dr Turner’s view of the, 172. 
Attraction , local, effects of, 356. 
Baltic Sea, remarks on the constancy of its level, 77- 
Barlow, Professor, his remarks on the practical construction of achro- 
matic object-glasses, 1, 311. 
Barometer, M. de Humboldt’s observations for determining the pro- 
gress of its horary variations under the tropics, 328. 
* results of Mr Daniel’s observations regarding it, 357- 
Benzoic acid in grasses, 170. 
Berthier, M. P., his account of the phosphate of lime of the coal for- 
mation, 326. 
Blackadder, Henry Home, Esq. his remarks on circumstances con- 
nected with the condensation of atmospheric humidity on solid 
substances, 81, 240. 
Boletus igniarius, capable of uniting after having been cut, 369. 
Bones, Mr Delpon’s account of those of various animals discovered at 
Breingues in the Department du Lot, 300. 
— exhibiting marks of gnawing, found in a cave near Torquay, 
363. 
Boracic acid. Dr Turner on its detection in mineralogy by the blow- 
pipe, 124. 
Boring-hits, improved by hammering, 37 5. 
Botany, notices in, 178. 
Bramah’s hydro-mechanical press, Mr Tredgold’s description of an 
improvement upon it, 29. 
Brazil, account of poisonous plants growing in the southern parts of, 
264. 
Bricklayer s trowel, improved by hammering, 375. 
