550 



INDEX. 



Desains (P.) on heat-spectra, 318. 

 Didyrnium, on the specific heat of, 



111. 

 Diffusion, on, 314. 



Dissociation, on some effects of, on 

 the physical properties of gases, 

 401. 

 Draper (Prof. H.) on photographs of 

 the spectra of Venus and « Lyrse, 

 238. 



(J. W.) on the fixed lines in 



the ultra-red invisible region of 

 the spectrum, 86. 

 Earth, on possible displacements of 



the axis of figure of the, 311. 

 Edlund (Prof. E.) on the thermal 

 phenomena of the galvanic pile and 

 electromotive forces, 428, 501. 

 Elastic solid, on the theory of an 



imperfectly homogeneous, 241. 

 Electric current, on the increase in 

 resistance to the passage of an, 

 produced on wires by stretching, 

 532. 

 Electrical resistance of metals, on the 



influence of light upon the, 481. 

 Electricity, on the laws of the pas- 

 sage of, through gases, 161 ; expe- 

 riments on contact, between non- 

 conductors, 389. 

 Electromotive forces, on the thermal 



phenomena of the, 428, 501. 

 Emerson-Keynolds (Prof. J.) on glu- 

 cinum, its atomic weight and spe- 

 cific heat, 38 ; on Franklandite, 

 284 ; on the composition of lievrite, 

 287. 

 Ennis (J.) on the physical and ma- 

 thematical principles of the nebular 

 theory, 262. 

 Field (F.) on Ludlamite, 52. 

 Fitzgerald (G. F.) on the rotation of 

 the plane of polarization of light 

 by reflection from the pole of a 

 magnet, 529. 

 Flames, on the theory of, 1, 89, 366. 

 Foster (Prof. G. C.) on the polariza- 

 tion of heat, 261. 

 Franklandite, on the new mineral, 



284. 

 Gallium, observations on, 281. 

 Galvanic pile, on the thermal phe- 

 nomena of the, 428, 501. 

 Galvanometer-needle, on a permanent 



deflection of the, 43. 

 Gas molecules, on the nature of, 

 320. 



Gases, on the relation between the 

 viscosity and temperature of, 81 ; 

 on the laws of the passage of elec- 

 tricity through, 160 ; is glass im- 

 pervious to? 314; on some effects 

 of dissociation on the physical 

 properties of, 401. 

 Geological Society, proceedings of 



the, 73, 153, 235, 311, 392, 539. 

 Geyser- throats, on the conversion of, 

 into volcanic vents, in Iceland, 108. 

 Glaucodote, on the crystallographical 

 forms of, 354. 



Glucinum, on the atomic weight and 

 specific heat of, 38. 



Gouy (M.) on the spectra of metals 

 at the base of flames, 238. 



Grenfell (J. G.) on supersaturated 

 saline solutions, 304. 



Guthrie (F.) on a sensitive mercury 

 barometer, 139. 



Harrison (J. E.) on the supposed 

 diathermancy of rock-salt, 424. 



Heat, on some effects of, upon voltaic 

 circuits, 159 : on the polarization 

 of, 261. 



Heat-rays, on the metallic reflection 

 of polarized, 477. 



Heat-spectra, researches on, 318. 



Heaviside (O.) on the speed of sig- 

 nalling through heterogeneous 

 telegraph circuits, 211. 



Hellesen (W.) on some effects of heat 

 upon voltaic circuits, 159. 



Heumann (Dr. K.) on the theory of 

 luminous flames, 1, 89, 366. 



Hicks (W. M.) on some effects of 

 dissociation on the physical pro- 

 perties of gases, 401. 



Hillebrand (Dr. W. F.) on the spe- 

 cific heats of cerium, lanthanum, 

 and didymium, 109. 



Holman (S. W.) on the relation be- 

 tween the viscosity and tempera- 

 ture of gases, 81. 



Huggins (Dr. W.) on the photogra- 

 phic spectra of stars, 527. 



Hull (Prof. E.) on a Middle Carbo- 

 niferous group, 539. 



Induction-coil, on a large, 30. 



Iodine, on the absorption-spectra of, 

 68. 



Kerr (Dr. J.) on rotation of the plane 

 of polarization by reflection from 

 the pole of a magnet, 321. 



Lanthanum, on the specific heat of, 

 114. 



