550 



INDEX. 



Leblanc (M. F.) on a new reagent for 

 oxide of carbon, 315. 



Lightning, on some remarkable effects 

 of, 53, 127,329. 



Liquids, on certain phenomena of 

 forced dilatation of, 158; on the 

 diffusion of, 181,254,341. 



Lochaber, on the parallel roads of, 

 33. 



Locomotive vessel, on the theory of a 

 new species of, 447. 



Logic, on the symbols of, 146. 



Magnetic force, on the means adopted 

 in the British Colonial Magnetic 

 Observatories for determining the 

 absolute values, secular change, and 

 annual variation of the, 228. 



telegraph, on the effects of 



atmospheric electricity upon the 

 wires of the, 78. 



Magnetism and diamagnetism, on the 

 relation of, to molecular arrange- 

 ment, 1. 



Mallet (W.) on the minerals of the au- 

 riferous districts of Wicklow, 392. 



Mammalia, on a system of notation 

 for the teeth in the class, 57. 



Mantell (G. A.) on the structure of 

 the Belemnite and Belemnoteuthis, 

 60; on the Pelorosaurus, 61. 



Mariotte's law, on the interpretation 

 of, 7G. 



Mene (M.) on bromine as a product 

 of the distillation of coal, 317. 



Mercury, on the distillation of, by 

 high-pressure steam, 472. 



Metallic acids, on the decomposition 

 of, by iodide of potassium, 318. 



Metals, on the tenacity of, 308. 



Meteor, description of a remarkable, 

 357. 



Meteorological observations, 79, 159, 

 220, 239, 319, 399, 479. 



Meteorology, on the great importance 

 of deviations from the mean state of 

 the atmosphere for the science of, 

 42 ; of England and the south of 

 Scotland, on the, 373. 



Middleton (J.) on an accelerating pro- 

 cess in photography, 178. 



Millon (M.) on a new compound of 

 sulphur, chlorine and oxygen, 474; 

 on hypochlorous acid and the chlo- 

 rides of sulphur, 476 ; on a test for 

 protein compounds, 478. 



Mineralogy: — Coracite, 153; Beudan- 



tite, 161, 349; Algerite, 179; Tri- 

 tomite, 234 ; Catapleite, 235; Athe- 

 riastite, 236 ; Eudnophite, 236 ; 

 Hyposklerite, 237 J Breislakite and 

 Augite, 444. 



Minerals of the auriferous districts of 

 Wicklow, on the, 392. 



Naphthalin, on the sulphuric and ni- 

 tric compounds of, 471. 



Napier ( J . ) on the conductibility of th 

 earth for electricity, 390. 



Nebulae, observations on the, 305. 



Newton's rings, on the untenablenesi 

 of the received theory of, 451. 



Nickles (M. J.) on a cause of varia- 

 tion in the angles of crystals, 316. 



Nitre, on the explosiveness of, 525. 



Nitroprussides, on the chemical for 

 mula of the, 289. 



Nourse (Mr.), notice of the life anc 

 papers of, 209. 



Ohm's laws, on a deduction of, 463. 



Owen (R.) on the development and 

 homologies of the molar teeth of 

 the Wart-hogs, with illustrations of 

 a system of notation for the teeth 

 in the class Mammalia, 57 ; on the 

 communications between the tym- 

 panum and palate in the Crocodi- 

 lian reptiles, 67. 



Page (Prof.) on electro-magnetism as 

 a motive power, 238, 



Parallel, roads of Lochaber, on the, 

 33. 



Pascal's theorem, on an instantaneous 

 demonstration of, 212, 363. 



Pelorosaurus, on the, 61. 



Percy (Dr.) on the composition of 

 Beudantite, 161. 



Phillips (Reuben) on the magnetism 

 of steam, 283 ; on the theory of 

 thunder-storms, 510. 



Photography, on an accelerating pro- 

 cess in, 1/8. 



Planta (A. de) on the composition of 

 certain natural organic bases, 543. 



Plants, on the extraction of iodine 

 from, 317- 



Political economy, on some doctrines 

 of, 468. 



Pollock (Sir F.) on the extension of 

 the principle of Fermat's theorem 

 of the polygonal numbers, 63. 



Potter (Prof.) on the aerometric ba- 

 lance, an instrument for measuring 

 the densitv of the air, 81. 



