INDEX. 



479 



Mason (J. W.) on Dakosaurus, 74. 



Mensbrugghe (G. Van der) on the 

 superficial tension of liquids with 

 regard to certain movements ob- 

 served on their surface, 409. 



Meteorite, microscopical investigation 

 of the Knyahynia, 424. 



Miller (Dr. W. A.) on a self-register- 

 ing thermometer for deep-sea 

 soundings, 305. 



Molecular physics, on the fundamen- 

 tal principles of, 34, 208. 



vortices, on the thermal energy 



of, 247. 



Moon, on the radiation of heat from 

 the, 314. 



Moon (R.) on the structure of the 

 human ear, and on the mode in 

 which it administers to the percep- 

 tion of sound, 118, 369. 



Moseley (Canon) on the descent of a 

 solid body on an inclined plane 

 when subjected to alternations of 

 temperature, 99. 



Moutier (J.) on the heat consumed in 

 internal work when a gas dilates 

 under the pressure of the atmo- 

 sphere, 76. 



Nebular hypothesis, on the, 308. 



Norton (Prof. W. A.) on the funda- 

 mental principles of molecular phy- 

 sics, 34, 208. 



Odling (Prof. W.) on a theory of con- 

 densed ammonia compounds, 455. 



Opals, on some optical phenomena of, 

 388. 



Page (F. J. M.) on the specific heat 

 and other physical properties of 

 aqueous mixtures and solutions, 

 158. 



Palladium, on the expansion of, at- 

 tending the formation of its alloy 

 with hydrogenium, 51. 



Parnell (J.) on a new fluorescent sub- 

 stance, 136. 



Phosphorus, on a remarkable struc- 

 tural appearance in, 215. 



Pickering (Prof. E. C), observations 

 on the corona during the total 

 eclipse, August 7, 1869, by, 281. 



Plateau (Prof. J.) on the figures of 

 equilibrium of a liquid mass with- 

 out weight, 445. 



Pogson (Mr.) on spectroscopic obser- 

 vations of the eclipse of August 

 1868, 338. 



Preece (W. II.) on the parallelogram 

 of forces, 428. 



Quincke (G.) on the constants of 

 capillarity of molten bodies, 81. 



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

 energy of molecular vortices, 247- 



Roberts (W. C.) on the expansion of 

 palladium attending the formation 

 of its alloy with hydrogenium, 51. 



Roger (M.) on the heat developed 

 in discontinuous currents, 166. 



Rosse (Earl of) on the radiation of 

 heat from the moon, 314. 



Rowney (Dr. T. H.) on the so-called 

 eozoonal rock, 235. 



Royal Institution, proceedings of the, 

 142. 



Royal Society, proceedings of the, 

 59, 156, 314, 383, 459. 



Ruschhaupe (F.) on the salt-mines of 

 Saint Domingo, 465. 



Sa'id-Effendi (M.) on themeasurement 

 of the electrical conductivity of 

 liquids hitherto supposed to be in- 

 sulators, 165. 



Schultz (C.) on the freezing-point of 

 water containing dissolved gases, 

 and on the regelation of water, 

 471. 



Seguin (J. M.) on the employment of 

 the spectroscope to distinguish a 

 feeble light in'a stronger one, 325. 



Shearing, on the fracture of brittle 

 and viscous solids by, 71. 



Solar prominences, on a method of 

 viewing the, without an eclipse, 68. 



Sound, on the structure of the ear, 

 and on the mode in which it ad- 

 ministers to the perception of, 118, 

 369. 



Spectra, on gaseous, 66 ; on obscure 

 calorific, 78; of carbon, on the, 

 249. 



Spectroscope, on recent discoveries in 

 solar physics made by means of the, 

 142 ; on the employment of the, 

 to distinguish a feeble light in a 

 stronger one, 324 ; description of a 

 new, 360. 



Spectrum-microscope, on a new ar- 

 rangement of binocular, 383. 



Stars, on the heat of the, 69 ; on the 

 spectral analysis of the, 360. 



Steel, on the limits of the magnetiza- 

 tion of, 404. 



Strutt (The Hon. J. W.) on some 



