INDEX. 



45^; 



Molecular motion, ou the mean length 

 of the paths described by the 

 separate molecules of gaseous bodies 

 on the occm'rence of, 81. 



Monamines, contributions towards the 

 history of the, 138, 368. 



Miiller (Dr. J.) on the thermal effects 

 of the solar spectrum, 233. 



Murchison (Sir R. I.) on the geology 

 of the North of Scotland, 72. 



MuiTay (Hon. C. A.) on some minerals 

 from Persia, 307. 



Naphtyle, on the sulphocyanide and 

 cyanate of, 304. 



Nitrogen, on the determiaation of, 

 422. 



Object-glass, on the construction of a 

 new, 1. 



Optical sm-faces, on the methods used 

 to ascertain the figure of, 151. 



Oudenodon, description of, 380. 



Owen (Prof. R.) on some reptilian 

 remains from South Africa, SJS. 



Ozone, experiments on, 435. 



Pavy (Dr. F. W.) on the sugar- 

 forming function of the liver, 142. 



Perkin (W. H.) on the action of pen- 

 tachloride of phosphorus on malic 

 acid, 281. 



Petzval (Prof.) on the camera obscura, 

 1. 



Phen)'le, on the cyanate and sulpho- 

 cyanide of, 63 ; on new nitrogenous 

 derivatives of, 371. 



Phosphates, metallic, on some artifi- 

 cial species of, 128. 



Phosphorus-bases, on the, 133, 360. 



Picramic acid, on the action of nitrous 

 acid upon, 370. 



Pisani (F.) on a native sulphate of 

 copper and iron, 449. 



Planets, on the resistance of the 

 luminiferous medium to the mo- 

 tions of, 352. 



Plants, on fossil, from the Devonian 

 rocks of Canada, 147. 



Plumbic ethyle, 215. 



Poinsot's four new regular solids, on, 

 123, 209. 



Polarized ray, on the direction of the 

 vibrations of a, 102. 



Polyhedra, on Poinsot's four new re- 

 gular, 123, 209, 



Potassium-ethyle, note on, 289. 



Pratt (Archdeacon) on the thickness 

 of tlie crust of tin- earth, .'527. 



Pressure, on the relation of, to density, 

 401. 



Print, stereoscopic representation of, 

 as it appears when viewed through 

 double-refracting spar, 414. 



Ptychognathus declivis, descriijtion of, 

 379. 



Quet (M.) on the stratification of the 

 electric hght, 109, 447. 



Rammelsberg (Prof.) on the composi- 

 tion of titaniferous iron ores, 231. 



Rankine (W. J. M.) on the conserva- 

 tion of energy, 250, 347. 



Regelation, remarks on, 162. 



Respiration, ou the ph8enomenaof,439. 



RhaynphorhynchusBucklandi, descrip- 

 tion of, 374. 



Rijke (Prof. P. L.) on a new method 

 of producing a vibration of the air 

 in a tube open at both ends, 419. 



Robinson (Rev. T. R.) on the strati- 

 fication of electric light, 269. 



Rocks, on the succession of, in the 

 Northern Highlands, 72. 



, metamorphic, on a method of 



observation applied to the study of 

 some, 169. 



Rosales (H.) on the gold-field of 

 Ballaarat, 149. 



Royal Society, proceedings of the, 56, 

 131, 210, 289, 360, 432. 



Salmon (Rev. G.) on curves of the 

 third order, 71. 



Salter (J. W.) on the fossils of the 

 Lingula flags, 306. 



Schiel (M.) on chlorous acid, 422. 



Serope (G. P.) on the formation of 

 volcanic cones and craters, 229. 



Seguin (M.) on the stratification of 

 the electric light, 109, 447. 



Simmler (M.) on the hquids contained 

 in certain minerals, 279. 



Simpson (Dr. M.) on a compound of 

 dibromallylammonia and chloride 

 of mercury, 194 ; on the action of 

 chloride of acetyle on aldehyde, 195. 



Smith (Dr. E.) on the phsenomenaof 

 respuation, 439. 



Snow-crystals, on some remarkable 

 transformations of, 410. 



Sodium-alcohol, on some reactions of, 

 427. 



Sodium-etiiylc, 225, 289. 



Solanine, on the constitution and pro- 

 ducts of decomposition of, 426. 



Solar spots, on some large, 152. 



