590 



INDEX. 



Magnetism, on the laws of, 265. 



, atmospheric, on magnetic con- 

 ducting power and, /I, 74. 



Magnets, on the lifting power of, 285. 



Magnus (Prof. G.) on the motion of 

 fluids. 1. 



Mallet (J. W.) on the occurrence of 

 gadoliuite iu Ireland, 350. 



Manganese, on the quantitative esti- 

 mation of, 517. 



Marchand (R. F.) on the equivalent 

 of magnesium, 170. 



MaskehTie (N. S.) on the connexion 

 of chemical forces with the polari- 

 zation of light, 428. 



Maumene (E.) on the chemical equi- 

 valent of ii-on, 76. 



Meteoric iron, remarks on a mass of, 

 517. 



Meteorological observations, 79, 175, 

 263, 351, 439, 519. 



Meteorology of England and the 

 South of Scotland during the quarter 

 ending December 31, 1850, 141 ; 

 of the lake district of Cumberland 

 and Westmoreland, 168, 501. 



Methylamine, on the preparation and 

 constitution of, 171- 



Miller (J. F.) on the relation of the 

 air and evaporation temperatures to 

 the temperature of the dew-point, 

 168; on the meteorology of the 

 lake district of Cumberland and 

 Westmoreland, 168, 501. 



Mineralogical notices : — White blende 

 of New Jersey, 23 ; Gm-olite, 111 

 Ephesite,160; Pholerite, 161; Car- 

 mine spar, 242; Dechenite, ib. 

 Aventmine felspar, 322; Peristerite 

 323 ; Bvtownite, 324 ; Labradorite 

 325; Raphilite, 326; Retinalite 

 327 ; Gadolinite, 350 ; Enargite, 

 411 ; Emerylite, 412. 



Moigno (M. I'Abbe) on the tubular 

 bridges of Conway and Menai, 416, 



Moon, relation of the direction of the 



wind to the age of the, 501. 

 Moseley (Rev. H.) on the rolling mo- 

 tion of a cylinder, 502. 



Miiller (J.) on the magnetization of 

 iron bars by the galvanic current, 

 198. 

 Murchison (Sir R. I.) on the vents of 

 hot vapour in Tuscany, and their 

 relations to ancient lines of fracture 

 and eruption, 51. 



Napier (J.) ou the phosphorescence 

 of chalk lines, 260 ; on two samjjles 

 of South Australian gold, 2()1. 

 Newton's rings, on an instnunent for 



the e.xact measurement of, 650. 

 Nitrification, remarks on, 420. 

 Nitrogen, on the sulphuret of, 346, 



435. 

 Nitro-populic acid, preparation and 



constitution of, 245. 

 Nitro- sulphuric acid, on the bleaching 



properties of, 432. 

 Nobert (M. T. A.) on the velocity of 



light, 570. 

 Nidlipores, on the composition of, 434. 

 O'Brien (Rev. M.) on the interpreta- 

 tion of the product of a line and a 

 force, 394 ; on symbolical statics, 

 491. 

 QEnanthylic acids, 1 73. 

 Organic bases, on the molecular con- 

 stitution of the, 568. 

 Owen (Prof.) on the exogenous pro- 

 cesses of vertebrae, 249. 

 Oxygen, on a method of obtaining, 



from atmospheric air, 518. 

 Page (Prof. C. G.) on electro-magnet- 

 ism as a moving power, 161 ; on a 

 singular property, and extraordinai-y 

 size and length of the secondary 

 spark, 1 70 ; on polarization by ca- 

 outchouc and gutta percba, 262. 

 Pendulums, on the effect of the inter- 

 nal friction of fluids on the motion 

 of, 337. 

 Pendulum experiments, account of, 



552. 

 Peristerite, analysis of, 323. 

 Phantascope, obsen'ations on the, 531 . 

 Philhps (R.), notice of the late, 514. 

 Pholerite, on the composition of, 161. 

 Phosphorescence of bodies, on the, 



81 ; effects of temperature on, 95. 

 Phosphori, determination of the abso- 

 lute quantity of light emitted by, 93. 

 Photogenic rays, on an instrument for 



measuring the intensity of, 478. 

 Photographic paper, on a method of 



preparing, 437. 

 Planet Irene, notice of the discovery 



of the, 682. 

 Planta (Dr. A. von) on the constitu- 

 tion of bebeerine, 114; on apiine, 

 212. 

 Plateau (J.) on the permanence of im- 

 pressions on the retina, 631. 



