INDEX. 



ABSORPTION, cutaneous, on, 

 154. 



Academy of Sciences at Berlin, plan for 



making a minute survey of the heavens, 



under the direction of, 124. 

 Acetic acid, on the production of, 17. 

 Acid, bromic, its combinations, 417. 

 Acid, new, produced by the mutual action 



of sulphuric acid and naphthaline, 201 



sulpho-napthalic, analysis of, 215. 



Acorns, analysis of, 43. 



Africa, Southern, on the serpents of, 237. 



Aikin, Mr. on the geological structure of 



Caderldris, 145. 

 Air, atmospheric, method of determining 



the quantity of vapour m it, 97. 

 Air-pump without artificial valves, 153. 

 Alcohol, derived from the fermentation of 



bread, 363. 

 Ammonia, hydrobromate of, 413. 

 Analysis of acorns, 43. 



of halloylite, 391. 



— ofpolygminite, 117. 

 of some minerals, 116. 



Analyses of Books, 52, 134, 215,226. 

 Animal magnetism in France, 155. 

 Animals, on the burrowing and boring of, 



61. 

 Apparatus, electro-magnetic, improved 



one, 357. 

 Arctic expedition, intelligence from, 149. 

 Arsenic, detection of, 391. 

 Astronomical observations, 52. 

 Atmospheric air, method of determining 



the quantity of vapour in it, 97. 



B, 



Babbage and Herschel, Messrs. on the 

 magnetism manifested by various sub- 

 stances during rotation, 183, 246. 



Balard, Mr. on a peculiar substance con- 

 tained in sea water, 381,411. 



Beaufoy, Col. astronomical observations, 

 52. 



Bell, Mr, on the nervous circle which 

 connects the voluntary muscles with the 

 brain, 226. 



Berthier, M. analysis of tymp cinder, 

 463. 



Berzelius, M. analysis of minerals by, 

 116— analysis of phosphate of yttria, 

 116-^analysi8 ofpolygminite, 117. 



Biographical notice of M. Proust, 241. 



. _ Dr. -^^iiaon, m 



Bitberg meteoric iron, 466. ' ' ~^ 



Bog, butter in, 75. ' ' 



Bonnington, near Leith, iodine found in 

 the mineral spring of, 390. 



Books,analysis of, 52, 134,215, 226, 453. 



new scientific, 76, 156, 239, 316, 



394,471. -' > 



Boulders, remarks on, 314. 



Brayley, Mr. on the rationale of the form- 

 ation of the filamentous and mamillary 

 varieties of carbon, and in the probable 

 existence of but two distinct states of 

 aggregation in ponderable matter, 192. 



Bread, baking of, chemical essay on, 161, 

 263. 



fermentation of, alcohol derived 



from, 363. 



Brome, a peculiar substance contained in 

 sea water, 381, 411, 



Brome, action of, on metaOic ' d3dde8, 

 416. 



Brome and chlorine, compound of, 420. 



hydrocarburet of, 422. 



natural history of, 423. 



Bromic acid, its combinations, 417. 



Bromuret of gold, 416. 



iodine, 420. 



■ phosphorus, 420. 



Bromuret of platina, 416. 



potassium, on, 412. 



lead, 414. 



— — mercury, 415. 



silver, 415. 



sulphur, 420. 



Butter in a bog, 75. 



Cader Idris, on the geolc^cal structure 



of, 145. 

 Cafein, on, 364, 389 — composition of, 



367. 



