180 



Ordnance survey, xxiii. 

 Organic ai.d inorganic substances, 

 action of heat on, 313. 



Pliillilis (Prof.), magnetic observa- 

 tions b}', 70, 144. 



Plymouth, account of the meteorolo- 

 gical observations at, 21. 



Railway constants, on, 197. 



Researches, specific, involving appli- 

 cations to Government or public 

 bodies, xxi. ; involving grants of 

 money, xxiv. 



Researches, special, notices of pro- 

 gress in, 315. 



Ross (Capt.), magnetic observations 

 bv. 74, 86, 116, 148, 157, 174. 

 182. 



Sabine (Major), memoir on the mag- 

 netic isoclinal and isodynamic lines 

 in the British Islands, 49. 



on the variations of the mag- 

 netic intensity, 318. 



Scotland, magnetic observations in, 

 86, 155. 



Tides, report on the discussions of, 19. 



Water, its action on iron, 253. 



West (W.) on the detection and mea- 

 surement of gases present in at- 

 mospheric air, 316. 



Whewell (Rev. W.), report on a level 

 line, measured from the Bristol 

 Channel to the English Channel, 1 . 



, report on the discussions of 



tides, 19. 



INDEX II. 



MISCELLANEOUS COMMUNICATIONS TO THE 

 SECTIONS. 



Abies and Finns, on the genera, 

 117. 



Abscess of the lungs, on, 134. 



Acid, gambodic, 60. 



Acoustic instrument, improved, 129. 



Acrodus nobilis, the extinct genus, on 

 the teeth of, 138. 



Actiniae, on the gemmiferous bodies 

 and vermifonn filaments of, 113. 



Adams (Dr.) on peat-bogs, 95. 



, on the placental souffle, 123. 



Addams (R.), apparatus for solidify- 

 ing carbonic acid, 70. 



Air, the amount required for respira- 

 tion, 131. 



Airy (G. B.) on correcting the local 

 magnetic action of the compass in 

 iron steam-ships, 21. 



Alcohol, on the products obtained by 



the action of nitric acid on, 55. 

 Allen (Capt. W.) on the probability 



of the river Tchadda being the out- 

 let of the lake Tchad, 99- 



Allis (T.) on the toes of the African 

 ostrich, 107. 



Alston Moor, on the mountain lime- 

 stone formation in, 79. 



America, North, on the climate of, 

 29 ; geolog)' and thermal springs of, 

 91. 



Ammonia, carbonate of, on the con- 

 stitution of, 63. 



Andrews (Dr.) on the influence of 

 voltaic combination on chemical 

 action, 69. 



Anthracosis in a lead miner, case of, 

 130. 



Arch, oblique, on the, 152. 



Ardea alba, on the, 106. 



Arsenic, vapour of, specific gravity of, 

 64. 



Ascarib alata, 115. 



