INDEX. 
457 
Lime, on the solution and crystallization of, 444. 
Limestone, Alpine, 213, 215. 
Linncea Bcmealis discovered in Northumberland, 206. 
Loadstone Hill in New Holland, account of, 179* 
Loadstone, on its action upon electric currents, 409. — a large one de- 
scribed, 436. 
Loango, observations on the country of, 327- 
Low, Mr D. on a machine for raising stones, 281. 
Luminosity produced by compression, &c, 216. — ^by insects, 217* — of 
ashes of wood steeped in solutions of lime, 218. 
Lunars, new method of working, 9^* 
Lungs, apparatus for restoring the action of, 1S9» 
M 
Machine for raising stones described, 281. 
Macmurdo, Captain, on the earthquake in India, 1 06. 
Magnesia, native hydrate of, discovered in Shetland, 352. 
Magnetimeter, description of the, by Mr Scoresby, S60, 
Magnetism of the Earth, Hansteen’s observations on the, 114, 245, 
363. 
Map of the country north of Ava, 76. 
Marrat, Mr, on a new method of working lunars, 98. 
Marum, Van, his experiment in favour of an electrical fluid, 195. 
MaxwelU Mr, his observations on the countries of Congo and Lo- 
ango, 327, 
Melville Island, meteorological table kept at, 442. 
Mercurial atmosphere, -444. 
Meteorological Committee appointed by the Royal Society of Edin- 
burgh, 201. 
Meteorohgical Table kept at Leith, 439. — at Carlsruhe, 440. — at Kin- 
fauns, 441. — at Chunar, 442. — at Melville Island, 443. 
Mica, on the existence of fluoric acid in, 21. 
Micrometer, account of a new double image one, I69, 
Mills, method of protecting them from back-water, 439- 
Mitscherlick s experiments on the forms of crystallised salts, I9. 
Mineralogy, Mohs" new system of, 56. 
Mohs’ new system of mineralogy, 56 — his characteristic, 213. 
Moll, Mr, his experiment in favour of two electrical fluids, 200. 
Moon, volcanoes in the, 429* 
Moselle, fall of a mountain into the, 215. 
Mud volcanoes of Trinidad, 417. 
Mummy pits of Thebes described, 220. 
Muriate of potash found in rock-salt, 201. 
Murray, Mr John, on an apparatus for restoring the action of the 
lungs, 139. — on the combustion of the diamond, 202. — on the al- 
loys of platinum, ib. — on luminosity produced by compression,&c. 
216. — on the luminosity of the ashes of wood steeped in lime, 218. 
— on the excitement of muscular fibre by voltaic electricity, 437. 
— on the electric spark, 438. 
Muscular Fibre, on the excitement of, by voltaic electricity, 437. 
