476 



INDEX. 



Antarctic scientific Expedition, pro- 

 posed by tlie British Association 

 and the Royal Society to Her Ma- 

 jesty's Government, 169, 252, 401. 



, hints and instructions drawn up 



for the guidance of the, 169, 253. 



■ seas, a vessel sent out by Mr. 

 Enderby for the purposes of disco- 

 very in the, 253. 



Arachnida, on the circulation of the 

 blood in the, 458. 



Archil, chemical history of, 233, 337. 



Ardwick, description of the observa- 

 tory at, 371. 



Arseniates, on the, 162. 



Assafcetida, resin of, 219, 241. 



Astacus marinus, on the organ of hear- 

 ing of, 472. 



Astronomical refractions, on, 60. 



clock, description of an, 221. 



Atkinson (J.) on a rain table and map, 

 221. 



Atmosphere, on the transparency of 

 the, and the law of extinction of the 

 solar rays in passing through it, 389. 



Atmospheric pressure, influence of the 

 moon on the, 395. 



Attractions, on calculations of, 289. 



Aurora Australis, notices of the, in 

 March 1841, 395. 



Aurora borealis, geometrical measure- 

 ment of the height of, 162. 



— -, on the phenomena of the, 230. 



, on a remarkable appearance of 



the, 382. 



Azoerythrine, chemical examination 



of, 233, 

 Azolitmine, 234. 



Azote, the equivalent numbers of, 123. 



Baily (F.), description of a new baro- 

 meter fixed up in the apartment of 

 the Royal Society, with an account 

 of the mode now adopted for cor- 

 recting the observed height of the 

 mercury, 1. 



Bakerian Lecture : Mr. Ivory on the 

 theory ofastronomicalrefractions,60. 



— — , Mr. W. Snow Harris on the 

 elementary laws of electricity, 156. 



, Mr. Airy on the theoretical ex- 

 planation of an apparently new po- 

 larity of light, 239. 



— — , Mr. G. Newport on the organs 

 of reproduction, and on the develop- 

 ment of the Myriapoda, 326. 



■ , Prof. J. D. Forbes on the trans- 



parency of the atmosphere, and the 

 law of extinction of the solar rays 

 in passing through it, 389. 

 Barometer, description of a new one, 

 fixed up in the apartments of the 

 Royal Society, 1. 



, on the mode in which observa- 

 tions have been recorded in the 

 Meteorological Journal of the So- 

 ciety, 2. 



, the Society's, its height above the 



mean level of the sea, 2. 



, compensating, description of a, 

 133. 



, hourly observations at sea of 



the, 239. 



, on variations of the mean height 



of, 21 1, 226. 

 ■ , on a cycle of eighteen years in 



the mean annual height of the, 292. 

 , on a remarkable depression of 



the, 292. 



, on an irregularity in the height 



of the, 295. 



■ ' ■ and thermometer, Coggan's, 72. 



Barometrical observations taken at 

 Naples, 303. 



observations at Yarmouth, 369. 



observations, showing the effect 



of the direction of the wind on the 

 difference between distant barome- 

 ters, 386. 



Baroscope, hydropneumatic, descrip- 

 tion of a, 126. 



Barrow (Sir J.), magnetic observa- 

 tions, 220. 



Barry (Dr. M.), researches in embry- 

 ology, 73^ 136, 222, 279. 



, a Royal medal awarded to, 172. 



on the corpuscles of the blood, 



234, 283, 323, 462. 



, a contribution to the physiology 



of cells, 222, 279. 



on the discovery of the germinal 



spot in the mammiferous ovum, 279. 



on the chorda dorsalis, 282. 



on fibre, 362, 384, 431. 



, spermatozoa observed within the 



mammiferous ovum, 432. 



on fossiparous generation, 441. 



, note on the observations of T. 



W. Jones, Esq., 462. 



Batten (Rev. Dr. J. H.), notice of the 

 late, 15. 



Bauer (F.), biographical notice of, 342. 



Bdellium, resin of, 241. 



Becquerel (M.), the Copley medal 



