564 



INDEX. 



Madder, Mubia tmmjista, examination of, 



86, 145. 

 Magnesium, on, 217. 



Magnet, table of the mean declination of 

 the, at Lisbon, from January 1858 to 

 December 1863, 347. 



Magnetic elements and their secular varia- 

 tions at Berlin, 218. 



declination, comparison of the most 



notable disturbances of, at Kew and 

 Nertschinsk, 247. 



, results of hourly observations 



made at Port Kennedy, 84 ; compari- 

 son of, with observations made at Point 

 Barrow, 85. 



, semiannual inequality of, 347. 



disturbance, comparison of certain 



traces produced simultaneously by the 

 self-recording magnetographs at Kew 

 and at Lisbon, July 15, 1863, 111. 



disturbances, retrospective view of 



the progress of the investigation into 

 the laws and causes of, 247. 



observations made m British Co- 

 lumbia, Washmgton Territory, and Yan- 

 couver Island, 15. 



storms, first analysis of l77 regis- 

 tered by the magnetic instruments in 

 the Royal Observatory, Grreenwich, 48. 



variations observed at Greenwich, 



87. 



Marcet (W.) on a colloid acid, a normal 

 constituent of human urine, 314. 



Mauve, or aniline-purple, on, 170. 



Maxwell (J. C), a dynamical theory of 

 the electromagnetic field, 531. 



Meteorites, on the microscopical struc- 

 ture of, 333. 



Meteorological registration of the chemi- 

 cal action of total daylight, 555. 



diethyl, action of chlorine on, 225. 



Mitscherhch (E.), obituary notice of, 

 ix. 



Molecular mechanics, on, 126 ; principles 

 of, 1 27 mathematical evolution of prin- 

 ciples of, 131 ; apphcation of the prin- 

 . ciples of, 135. 



'• physics, contributions to, fifth 



memoir, 160. 



Mortahty, second part of supplement to 

 two papers on, 228. 



Miiller (H.) on the chemical constitution 

 of Beichenbach's creosote, 484. 



IVfuniistine, 86, 147 ; tractorial power of, 

 148. 



Musical currents, on the ])hysical consti- 

 tution and relations of, 392. 



— ^ — instruments with fixed tones, on 

 the temperament of, 404. 



scale, on the conditions, extent, and 



realization of a perfect, 93. 



Myologv, on some varieties in human, 

 209. 



Nebulae and clusters of stars, cataloerae 

 of, 2. ^ 



, on the spectra of some of the, 492. 



Nerve-currents, indications of the paths 

 taken by, through the caudate nerve- 

 cells of the spinal cord and encephalon, 

 386. 



Nerves, pneumogastric and great sympa- 

 thetic, in an acephalous fcetus, descrip- 

 tion of, 90. 



Nitrogen substituted for hydrogen in a 

 new class of compounds, 375. 



Nitropurpurehie, 150. 



Obituary Notices of deceased Fellows : — 



Arthur Connell, i. 



Edward Joshua Cooper, i. 



Joshua Eield, iii. 



Bichard Fowler, M.D., iii. 



Peter Hardy, v. 



John Taylor, v. 



William Tooke, vi. 



Bear- Admiral J ohn Washington, vii. 



Cesar Mansuete Despretz, viii. 



EiDiardt Mitscherhch, ix. 



Carl Ludwig Christian Biimker, xvi. 

 Owen (B.), description of the cavern of 

 Bruniquel, and its organic contents.— 

 Part I. Human remains, 277. 



Parker (W. K.) and Jones (T. B.) on 

 some foraminifera from the North At- 

 lantic and Arctic Oceans, including 

 Pavis Strait and Baffin Bay, 239. 



Perkin (W. H.) on mauve or aniline- 

 purple, 170. 



Phenyltolylamine, 485. 



Phipson (T. L.) on magnesium, 217. 



, note on the variations of density 



produced by heat in mineral substances, 

 240. 



Plane water-Hnes, on, 15. 



Pliicker (J.) and Hittorf (J. W.) on the 

 spectra of ignited- gases and vapours, 

 with especial regard to the different 

 spectra of the same elementary gaseous 

 substance, 153. 



Point Barrow, magnetic observations 

 made at, 85. 



Pollock (Sir F.) on Fermat's theorem of 

 the polygonal.numbers, 542. 



Polygonal numbers, on Fermat's theorem 

 of the, 542. 



Port. Kennedy, observations of the mag- 

 netic declination made at, 84. 



Pratt (V en. J. H.) on the degree of un- 

 certainty which local attraction, if not 

 allowed for, occasions in the map of a 

 country, and in the mean figure of the 

 earth as determined by Geodesy ; a 

 method of obtaining the mean figure 

 free from ambiguity, from a comparison 

 of the Anglo- Gralhc, Bussian, and In- 



