532 



sion of the, in Harmotome and Woh- 



lerite, 319. 

 Orion, changes in the nebula of, IBS. 

 ■ ■ , observations on the great nebula in, 



60. 



, remarks on the great nebula in, 



322. 



, spectrum of great nebula of, 451. 



Oxindicanine, 134. 



Oxmantown (Lord), an account of obser- 

 vations on the great nebu.la in Orion, 

 made at Birr Castle, with the 3-feetand 

 6-feet telescopes, between 1848 and 

 1867, 60. 



Oxurianine, 134. 



Ozone, on the identity of the body in the 

 atmosphere which decomposes iodide of 

 potassium with, 63, 



Palestine, on the geographical and geolo- 

 gical relations of the fauna and flora of, 

 816, 



Pancreas, special action of, on fat and 



starch, 209. 

 Partes (E . A.) on the elimination of nitrogen 



during rest and exercise on a regulated 



diet of nitrogen, 44. 

 Partes (W.) on the tides of Bombay and 



Kurrachee, 414. 

 Pendulum-electrograph, description of, 



458. 



Per sulphide of hydrogen, contribution to 



the knowledge of, 437. 

 Pettigrew (J. B.) admitted, 437. 

 , on the distribution of the fibres in 



the muscular tunics of the stomach in 



man and other mammalia, 65. 

 Phillips (J. A.), notes on the chemical 



geology of the gold-fields of California, 



294. 



Phillips (J.), notices of some parts of the 



surface of the moon, 231. 

 Photosphere of sun, constitution of, 27 ; 



wind-currents in, 29. 

 Physical observations in India, proceedings 



of tlie Covmcil of the Royal Society with 

 , reference to, 283. 



Poisons, an attempt to apply chemical 

 principles in explanation of the action 

 of, 465. 



Polar expedition by the Swedish govern- 

 ment, 381, 464. 



Pollock (Sir P.) on the mysteries of 

 numbers alhxded to by Fermat (Se- 

 cond communication), 251. 



Potassium, refraction-equivalent of, 441. 



Projectiles, elongated, resistance of air to 

 the motion of, 261. 



— — , rifled, on the resistance of the air 

 to, 263. 



Quadric forms containing more tlian 



three indeterminates, on the orders and 

 genera of, 197. 



Quartic, binary, on the conditions for tlie 

 existence of three equal roots, or of two 

 pairs of equal roots of a, 229. 



Q.uintic, binary, on the conditions for the 

 existence of three equal roots, or of two 

 pairs of equal roots of a, 229. 



Eainfall, on a supposed connexion be- 

 tween, and changes of the moon, 213. 



Eandom straight lines, theory of proba- 

 bility applied to, 266. 



Rankine (W. J. M.) on waves in liquids. 

 344. 



Reed (E.J.) on the relation of form and 

 dimensions to weight of material in the 

 construction of iron-clad ships, 306. 



Refraction-equivalents, researches on, 

 439. 



Rennie (G-.), obituary notice of, xxxiii. 

 Retina of the hedgehog, anatomy of the 



blood-vessel system of the, 439. 

 Richardson (B, W.) admitted, 1. 

 Riemann (Gr. F. B.), obituary notice of, 



Ixix. 



Rifled projectiles, law of resistance of the 

 air to, 321. 



Rigidities, account of experiments on tor- 

 sion and flexm'e for the determination 

 of, 248. 



Robinson (Rev. T. E.) on the new re- 

 flecting telescope to be used at Mel- 

 bourne, Australia, 159. 

 Robinson (Rev. T. R.) and Grubb (T.), 

 description of the great Melbourne tele- 

 scope, 434. 



j Rogers (H. D.), obituary notice of, xxxv. 



I Roscoe (H. E.) on the chemical intensity 

 of total dayught at Ivew and Para, in 



j 1865-67, 41. 



I , researches on vanadium, 220. 



Rosso (Earl of) elected, 220; admitted, 

 317. 



Rosse (Earl of), obituary notice of, xxxvi. 

 Roval medal awarded to J.B. Lawes and 



J. II. Gilbert, 176 ; to Sir W. Logan, 



179. 



Sabine (E.), contributions to terrestrial 

 magnetism (No. XL), 480. 



Saline solutions, supci-saturated, on, 403. 



Sanderson (J. S. B.) admitted, 1. 



Season, influence of, on composition of 

 carbonate-of-lime waters, 189. 



Sextants, description of apparatus for veri- 

 fication of, 2. 



Schorlemmer (C.) on the constitution of 

 capryl alcohol from castor-oil, 376. 



, researches on the hydrocarbons of 



the series C" Jl^''+^ (No. III.), 34. 



