1 



E X. 



A. 



ACID, boracic, decomposition of, 260 



Acid, new, obtained from ginger, 384 



Acid, nitric, its action on cork, 149 



Acid, oxigenized muriatic, 275 



Acids, table of the sequences of, with 

 different bases, 360 



Acton, Mr. his experiments on the ger- 

 mination of seeds, 214 



Adanson, on the rapid vegetation of 

 plants in warm climates, 8 



Aerostation, 319 



Agricultural improvements, 51 



Air, expansion of, when moist, 182 



Alcyonia, description of, 40, 4G 



Allen, Mr. 330 



Alluau, M. on artificial sand stones 

 that have undergone a regular con- 

 traction in the fire, 268 



Altitudes, new formula for taking, 308 



Alum, purification of, 307 



Alyon, M. 145 



Ammonia, how operated on. by potas- 

 sium, 242 



Amphibia, 314 



Analysis of calaguala root, 141 — Of 

 the smut of wheat, 146— Of oriental 

 turquoise, 158 — Of fossil horns, 159 

 — Of the sulphate of barytes, &c. 

 174, 280— Of kaneelstein, 23 I— Of 

 .. a schist in the environs of Cherbourg, 

 304— Of sulphur, 321,365,369— Of 

 phosphorus, 328— Of plumbago, 530 



(■*— Of charcoal, 331— Of the diamond, 

 332 

 Andreoli, M. 319 

 Angulo, M. 263 

 Aris, Mr. on the advantages of paring 



and burning land, 194 

 Arcucil, philosophical and chemical so- 

 ciety of, 316 

 . Vol. XXIII 



Armstead, Mr. 61 

 Ashes used as mam 

 Atkinson, Mr. 61 

 Atmospheric refraction, 309 

 Attractions, elective, numerical table 

 of, 354 



B. 



Bailey, Mr. on paring and burning, 193 

 Bakerian lecture, 241, 322 

 Bald, Mr. his description of the mine- 

 ral strata of Clackmannanshire, 157 

 Balloon, 319 



Baradelle, Mr. his capillary pen, 236 

 Barlow, Mr. P. his investigation of a 

 problem in the doctrine of permuta- 

 tions, 203 

 Barrow's Euclid, remarks on, 377 

 Bartley, Mr. on the advantages of ad- 

 mitting the air to the roots of pUnts, 

 15 

 Barytes, analyzed, 174, 280 

 Basal tes, formation of, 268 

 Bats, varieties of, 106 

 Beavers, propagation of in North Bri- 

 tain and Ireland, recommended, 27 

 —Peculiarity in the claw of, 254 

 Bees poisoned by the effluvia of the 



rhus vernix, 234 

 Benson, Mr. 60 

 Bergman, on the relative proportions of 



the composition of soils, 121 

 Berlin society, S16 



Berthier, M. on the sulphates of lime, 

 barytes, and lead, 2 80— His analysi 

 of a schist in the environs of Cher- 

 bourg, 304 

 Berthollet, M. on backening muriata 

 of silver, 156— On the sulphate of 

 barytes, 174*— On the fusibility of 

 b baryU*, 



