550 



INDEX. 



Magnetic relations of the positive and 

 negative optic axes of crystals, 450. 



Magnetic telegraph, on the determi- 

 nation of the difference of longi- 

 tude, hy means of the, 302. 



Magnetism of steam, observations on, 

 502. 



Malic acid, conversion of, into succi- 

 nic acid, 156. 



Man, on the organ of taste in, 531. 



Marcet (Prof.) on the action of chlo- 

 roform on the sensitive plant, 130. 



Matteucci(M. Ch.), researches in elec- 

 tro-physiology, 440. 



Mediterranean, analysis of the water 

 of the, 398. 



Mercury, on the existence of, in the 

 Tyrol, 318. 



, on the transit of Nov. 8-9, 



1848, 141. 



Metallurgy, thoughts on ancient, 247. 



Metals, on the reflexions of different 

 kinds of heat by, 471. 



Meteorological observations, 79, 159, 

 239, 319, 399, 479. . 



phsenomena, obsei-va- 



tions on some, 469. 



Meteorology of England during 1847, 

 on the, 271. 



Methylamide, on the preparation and 

 composition of, 316. 



Meurer (M.) on the preparation of 

 iodide of arsenic, 152. 



Miller (J. F.) on the depth of rain 

 which falls in the same localities at 

 different altitudes, in the hilly di- 

 stricts of Lancashire, Cheshire, &c., 

 308. 



Mimosa pudica, on the action of chlo- 

 roform on, 130. 



Mine ventilator, on Mr. Struve's, 388. 



Mineralogy : — analysis of the black 

 yttro-columbite of Ytterby, 152; 

 Californian gold, 205, 394 ; proto- 

 gine of the Alps, 233 ; orthose, 234 ; 

 oligoclase, 234, 237 ; felsite, 237 ; 

 muromontite, 438 ; gray copper ore, 

 318; faujasite, 394; vanadiate of 

 lead, 395 ; diamond, 397. 



Minerals, on the artificial formation 

 of some, 545. 



Moon (R.) on the theory of sound, 

 1 36 ; on a new method of finding 

 the rational roots of numerical 

 equations, 457. 



Murchison (Sir R. I.) on the geolo- 



gical structure of the Alps, Cai-pa- 

 thians, and Apennines, 207 ; on the 

 distribution of the superficial detri- 

 tus of the Alps, 523. 



Muromontite, analysis of, 237. 



Muscular contraction, on the deflec- 

 tion of the magnetic needle by, 543. 



Newton's rings, on the formation of 

 the central spot of, 137. 



Nile, notice of Dr. Bialloblotzky's 

 journey to the sources of the, 157. 



Nitric acid, observations on anhy- 

 drous, 314. 



Nitroanisic acid, on the rafeparation 

 and composition of, 478. 



Nitrogen, on liquid protoxide of, 153. 



Nitrous aither, on the rectification of 

 spirit of, 319, 



Numerical transformation, note on, 

 347. 



Observatories, notice of the principal 

 English, 63. 



CErsted (H. C.) on diamagnetism, 81. 



Oligoclase, analysis of, 237. 



Owen (Prof.) on the development and 

 homologies of the carapace and 

 plastron of the chelonian reptiles, 

 307. 



Oxylizaric acid, on the preparation 

 and composition of, 237. 



Patterson's (R.) First Steps to Zoo- 

 logy, notice of, 297. 



Peretz (M.) on the composition of 

 the black yttro-columbite of Ytter- 

 by, 152. 



Permutations, on the theory of, 527. 



Persoz (M. J.) on the reaction of sul- 

 phate of potash and sulphate of 

 copper, 475; on octohedral and 

 cubic alum, 476. 



Phillips (John) on ancient metallui'gy, 

 and mining in Brigantia and other 

 parts of Britain, 247- 



• (Reuben) on the magnetism 



of steam, 602. 



Philosophy, on the fundamental anti- 

 thesis of, 135. 



Phosphoric acid, on the isomeric mo- 

 difications of, 321 ; separation of, 

 from pyrophosphoric acid, 340. 



Phosphorus, on a new modification 

 of, 78, 



Pierre (M. J.) on the solubility of 

 chloride of silver in hydi-ochloric 

 acid, 152. 



Pliicker (Prof.) on the magnetic rela* 



