INDEX. 



559 



Logeman (M.) on the conductibility 

 of liquids for electricity, 465. 



Lubbock (Sir J. W.) on a graphical 

 method of clearing a lunar distance, 

 280. 



Madder, on the action of the ferment 

 of, on sugar, 161. 



Magnetic declination, on the observa- 

 tions of the, at the Observatory of 

 St. Helena, 139. 



Magnetism, on the periodical varia- 

 tions of terrestrial, 385. 



Magnus (Prof. G.) on red and black 

 sulphur, 177. 



Matteucci (M.) on the electricity of 

 flame, 399. 



Meteorolites, observations on, 329, 

 449. 



Meteorological observations, 79, 159, 

 239, 327, 407, 555. 



Mineralogical notices, 137. 



Moon's orbit, on some new theorems 

 relating to the, 27, 98, 520. 



Newport (the late G.) on the impreg- 

 nation of the ovum in the Am- 

 phibia, and on the early stages of 

 development of the embryo, 224. 



Nitro-glycerine, 548. 



Nitropicric acid, on the action of bro- 

 mine on, 36. 



Numbers, prime, on the law of, 114. 



Object-glasses, on the relation of the 

 angular aperture of, to their pene- 

 trating power and to oblique light, 

 70. 



Osmotic force, researches on, 151. 



Ovum, on the impregnation of the, 



. in the Amphibia, 224. 



Palaeozoic system of England, on the, 

 301, 35.9, 472. 



ParafRne, 463. 



Pendulum, on the rotation of the, 19. 



Platinum-sdlts, on the fractional 

 crystallization of, 209. 



Polarization, galvanic, on the magni- 

 tude of, 380. 



Porosity of bodies, on the, 287, 370. 



Price (Dr, A. P.) on a new method of 

 alkalimetry, 553. 



Probabilities, on the theory of, 87, 

 91, 175, 431. 



Pyridine, on the presence of, in the 

 naphtha from the bituminous shale 

 of Dorsetshire, 209. 



Pyro-electric currents, on the produc- 

 tion of, 323. 



Quantics, on, 69. 



Quaternions, on some extensions of, 

 125, 261. 



Quinine, on the constitution of, 123. 



Rain-fall, on some simultaneous ob- 

 servations of, 444. 



Rankine (W. J. M.) on the expansion 

 of certain substances by cold, 357 ; 

 on some simultaneous observations 

 of rain-fall at different points on 

 the same mountain-range, 444 ; on 

 formulae for the maximum pres- 

 sure and latent heat of vapours, 

 530. 



Regnault (V.) on the elastic forces of 

 vapours in vacuo and in gases, at 

 - different temperatures, and on the 

 tensions of the vapours furnished 

 by mixed or superposed liquids, 

 269. 



Reichenbach (Baron) on paraffine, 

 463. 



Retina, on the circumstances which 

 regulate the production of pictures 

 on the, 544. 



Robinson (Dr. G.) on the disintegra- 

 tion of urinary calculi by the lateral 

 disruptive force of the electrical 

 discharge, 220. 



Ross (Capt. Sir J. C.) on the effect of 

 the pressure of the atmosphere on 

 the mean level of the ocean, 318. 



Royal Institution of Great Britain, 

 proceedings of the, 74. 



Royal Societv, proceedings of the, 

 62, 139,213,318,541. 



Sabine (Col. E.) on some conclusions 

 derived from the observations of 

 the magnetic declination at the 

 Observatory of St. Helena, 139. 



Saline solutions, on the boiUng-points 

 of, 273. 



Schunck (Dr. E.) on the action of the 

 ferment of madder on sugar, 161. 



Scoresby (Rev. W.) on some of the 

 circumstances and principles which 

 regulate the production of pictures 

 on the retina, 544. 



Secchi (A.) on the periodical varia- 

 tions of terrestrial magnetism, 385. 



Sedgwick (Rev. Prof.) on the May 

 Hill sandstone, and the Palaeozoic 

 system of England, 301, 359, 472. 



Silex, on a remarkable form of, 139. 



Solar heat, on the immediate cause of, 

 424. 



