Index. 



483 



tarth, 217 — on the figure of the 

 earth, 401. 



Larch trees, on, 235. 



Lassaigne, M. on the urine of the sow, 

 146. 



Lassiouite and wavellite, on, 276. 



Leach, Dr. description of arctic ani- 

 mals, 201. 



Lead and arsenic, native sulphuret of, 

 96. 



on the volatility of the oxide of, 



314. 



Leeson, Mr. on the gas blow-pipe, 235. 



Legeudre, M. exercises on the integral 

 calculus. 373. 



Leslie, John, on heat and climate, 5. 



Light, difference between solar and 

 artificial, 465. 



Lime, action of, on organized sub- 

 stances, 125 — in mineral waters, 

 method of determining, 147. 

 Lithic acid, action of nitric acid on, 



363. 

 Luminous phenomenon, 472. 



M. 

 Mackintosh, Sir J. on the population of 



Bombay, 429. 

 Macome, Mr. on a double rainbow, 



384. 



Magnesia, native, carbonate of, 69. 

 Magnetic needle, on the variation of, 

 74. 



■ iron ore, on, 230. 



Maguetical and meteorological tables, 

 Col. Beaufoy's, 76, 154, 236, 316, 

 396, 476. 

 Maistre, Le Count, on a new purple oil 

 colour from gold, 361 — on prussic 

 acid, 440. 

 Marcet, Dr. on sea-water, 52 — on the 

 water of Lake Ourmia, or Urumea, 

 in Persia, 150. 

 Mathematical problem by Mr. Adams, 



392. 

 Meickle, H. on centrifugal force, and 

 the upright growth of vegetables, 32 

 — on the different quantities of rain 

 collecting in rain gauges of different 

 heights, 812. 

 Mercurial ointment, new, 3:7. 

 Mercury, on the oxides and salts (if, 



241, 32 L 

 Meteorological observations, Mr. How- 

 ard's, 79, 157, 159, 239, 319, 399, 

 479 



. ! Mr. Holt's, 



313, 386. 

 Microscope, on an improved, 107. 



solar, on, 428. 



Milto water, on composition of, 21. 

 Mineral, new, 68. 

 Moluccas, natural history of, 75. 

 Moon, horizontal, Dr. Clarke's descrip- 



tion of, vindicated, 149 — objections 

 to, 391. 



Moscow, geology of the neighbourhood, 

 381 — climate of, 382 — population 

 of, 382. 



Mucic acid, new acid from, 265. 



Murray, Dr. on the constitution of 

 acids, alkalies, and earths, 281, 344 



Mr. J. on Hereulaneum, 198 — 



on the American mode of increasing 

 heat, 206 — on gauze veils, 230 — on 

 the evolution of carburetted hydro- 

 gen gas from pit coal, 231. 



N. 



Necronite, a supposed new mineral, 68. 

 Newfoundland dog, sagacity of, 473. 

 Nickel, pure method of obtaining, 142. 

 Nugent, Dr. on the geology of Antigua, 



141. 



O. 

 Octahedral iron ore, 384. 

 CErsted, Prof. Reserches sur l'ldentitc: 



des Forces Chimiques et Electriques, 



analysis of, 47. 

 Ourmia, or Urumea Lake, on the 



waters of, 150. 

 Oxygen, on the respiration of, 71. 

 Oxygenized water, on, 209, 274. 



Pendulum seconds, on the length of, 

 139. 



Peri net, M. on preserving water at sea, 

 387. 



Perkins, Mr on a new instrument, 153. 



Persia, cow-pox in, 390. 



Petit and Dulong's researches on heat, 

 189. 



Picromel, on, 69. 



Pierce, Mr. on a native carbonate of 

 magnesia, 69. 



Plants indigenous in the north of En- 

 gland, on, 129. 



Platinum, on coating vessels with, 469. 



Playfair, Prof, death of, 153,310. 



Poinsot, M. on the application of alge- 

 bra to the theory of numbers, 222. 



Poisson, M. on the precession of the 

 equinoxes, and the libration of the 

 moon, 220 — on the motion of elastic 

 fluids in cylindrical Uibes, 373. 



Population of Moscow, 382. 



Povrett, Mr. on the ferro-chyazate of 

 potash, and on the atomic weight of 

 iron, 295. 



Potash in sea water, 53. 



Potash binoxalate, action of, on black 

 oxide of magnesia, 386. 



Prehnile, fibrous, on, 67. 



Proof, Dr. on pulmonary concretions, 



232 — description of an eirthy mass 



discharged from a wen, 233 — on the 



action of nitric upon lithic acid, 363 



