550 



INDEX. 



Hervvig (H.) on the heat-conducting 



power of mercury, 481. 

 Hilgard (Prof. E. W.) on some points 

 in Mallet's theory of vulcanicity, 

 41. 

 Horner (C.) on the behaviour of cer- 

 tain fluorescent bodies in castor-oil, 

 165. 

 Hiibener (T.) on the flow of saline 

 solutions through capillary tubes, 

 77. 

 Huggins (Dr. W.) on the motions of 

 some of the nebulae towards or 

 from the earth, 471. 

 Ice, on some physical properties of, 



56. 

 Insects, on the supposed auditory ap- 

 paratus of, 371. 

 Integrals, on a new formula in defi- 

 nite, 53, 295, 400. 

 Iron bodies, on the magnetization- 

 functions of various, 200. 

 Judd (J. W.) on the ancient volcanoes 



of the Highlands, 541. 

 Lea (M. C.) on the nature of the 

 action of light upon silver bromide, 

 80. 

 Light, on the polarization of the 

 zodiacal, 13; on the nature of 

 the action of, on silver bromide, 

 80 ; reflected by permanganate of 

 potassium, on the, 231 ; on the stra- 

 tification of the electric, 320: on 

 the intensity of the, reflected from 

 glass, 475. 

 Lovering (Prof.) on the mathematical 

 and philosophical state of the phy- 

 sical sciences, 493. 

 Lowery (W.) on Melde's experiment 

 upon the vibrations of strings, 78. 

 Lungs, on wind-pressure in the hu- 

 man, during performance on wind 

 instrument?, 113. 

 M'Leod (Prof.) on an apparatus for 

 measurement of low pressures of 

 gas, 110. 

 Madan (H. G.) on an improvement 

 in the construction of the spectro- 

 scope, 116. 

 Magnet, on the hydro dynamical 

 theory of the action of a galvanic 

 coil on an external small, 180, 350, 

 430. 

 Magnetism, on the maximum of, of 



nickel and cobalt, 321. 

 Magnetization-functions of various 

 iron bodies, on the, 200. 



Magnets, on the attraction of, 393. 

 Mallet (R.) on the tidal retardation 

 of the earth's rotation, 38 ; on 

 some points in his theory of vul- 

 canicity, 41. 

 Mayer's (Prof. A. M.) researches in 



acoustics, 266, 371, 445, 513. 

 Melde's experiment on the vibrations 



of strings, observations on, 78. 

 Mercury, on the heat-conducting 



power of, 481. 

 Mills (Dr. E. J.) on Gladstone's ex- 

 periments relating to chemical 

 mass, 241. 

 Motion, on a mechanical principle 

 resulting from Hamilton's theory 

 of, 274. 

 Mud-craters of the Mekran coast, on 



the, 230. 

 Muller (Prof. J. J.) on a mechanical 

 principle resulting from Hamilton's 

 theory of motion, 274. 

 Nebula?, on the motions of some of 

 the, towards or from the earth, 

 471. 

 Negretti (H.) on a new deep-sea 



thermometer, 306. 

 Neyreneuf (M.) on the stratification 



of the electric light, 320. 

 Nickel, on the maximum of magnet- 

 ism of, 321. 

 Nordenskiold (A. E.) on the cosmic 

 dust which falls with atmospheric 

 precipitations, 546. 

 Ocean- currents, on, 21, 97, 166. 

 Ocular-spectroscope for stars, on a 



simple, 156. 

 O'Kinealy (J.) on Fourier's theorem, 

 95 ; on a new formula in definite 

 integrals, 295. 

 Permanganate of potassium, on the 



light reflected by, 231. 

 Phosphorus, on the conversion of or- 

 dinary, into amorphous, by electri- 

 city, 239. 

 Photographic image, on the opacity 



of the developed, 161. 

 Physical sciences, on the mathema- 

 tical and philosophical state of the, 

 493. 

 Planimeter, on Amsler's, 11. 

 Purvis (F. P.) on Amsler's planime- 

 ter, 11. 

 Quincke (G.) on electrical currents 

 accompanying the non-simultane- 

 ous immersion of two mercury 

 electrodes in various liquids, 479. 



