\so 



INDEX. 



ance of bismuth, when cooled to 

 the temperature of solid air, 303. 



Dilution, on the law of, in very 

 dilute solutions, 142. 



Duane (W.) on the velocity of elec- 

 tric waves, 211. 



Electric waves, on the velocity of 

 211 ; on tinfoil grating as a de- 

 tector for, 497. 



Electrical properties of selenium, on 

 the, 233. 



rays, oo the double refraction 



of, 152. 



resistance of bismuth when 



cooled to the temperature of solid 

 air, on the variation in the, 303. 



Electricity, on the relation between 

 the atom and the charge of, carried 

 by it, 511. 



Electromagnetic effect, on an, 200, 



Estreicher (T.) on the pressures of 

 saturation of oxygen, 454. 



Ethane and nitrous oxide, on the 

 condensation and the critical phe- 

 nomena of mixtures of, 173. 



Fleming (Prof. J. A.) on the thermo- 

 electric powers of metals and 

 alloys between the temperatures of 

 the boiling-point of water and the 

 boiling-point of liquid air, 95 ; on 

 the variation in the electrical re- 

 sistance of bismuth, when cooled 

 to the temperature of solid air, 308. 



Fox (H.) on a well-marked horizon 

 of Radiolarian rocks in the Lower 

 Culm Measures of Devon, &c, 317. 



Functions, on the development of 

 arbitral, 506. 



Galvanometer design, on waste space 

 near the needle in, 494. 



Gas, on the kinetic theory of, 362. 



Gases, on the viscosity of mixed, 421. 



Geological Society, proceedings of 

 the, 147, 228, 313, 394, 544. 



Gladstone law in physical optics, on 

 the, 321. 



Globe, on the use of, in the study of 

 crystallography, 153. 



Gregory (Dr. J. W.) on the palseon- 

 1 ology and physical geology of the 

 West Indies, 151 ; on the geology 

 of Mt. ftuwenzori, 319 ; on the 

 " Schistes Lustres " of Mont Jovet, 

 547. 



Gresley (W. S.) on ice-plough fur- 

 rows of a glacial period, 313. 



Griffiths (E. H.) on the thermal unit 

 431. 



Haig (Major H. deH.) on the physi- 

 cal features and geology of Mauri- 

 tius, 313. 



Harker (A.) on the geology of Car- 

 rock Fell, 148. 



Harrison (Prof. J. B.) on the chemi- 

 cal composition of some oceanic 

 deposits, 229. 



Heat, on the capacity of water for, at 

 different temperatures, 433. 



Helium, on the spectrum of, 297 ; 

 on, and its place in the natural 

 classification of elementary sub- 

 stances, 466 ; line D 3 , on the wave- 

 length of the, 547. 



Herroun (Prof. E. F.) on the use of 

 an iodine voltameter for the mea- 

 surement of small currents, 91. 



Hibbert (W.) on the Gladstone 

 " law " in physical optics, and the 

 true volume of liquid matter, 321. 



Hinde (Dr, G. J.) on a well-marked 

 horizon of Radiolarian rocks in 

 the Lower Culm Measures of 

 Devon, &c, 317. 



Holman (Prof. S. W.) on waste 

 space near the needle in galvano- 

 meters, 494. 



Howorth (Sir H, H.) on the shingle 

 beds of Eastern East Anglia, 314 ; 

 on the chalky clay of theFenland, 

 544. 



Hull (Prof. E.) on the physical con- 

 ditions of the Mediterranean basin, 

 149. 



Hunt (H. F.) on the development of 

 arbitrary functions, 506. 



Hydrogen, on the critical and the 

 boiling temperature of, 202, 272. 



Illumination of a plane due to a 

 small source of light, on a simple 

 geometrical construction for find- 

 ing the, 463. 



Inductive circuits, on the measure- 

 ment of varying currents in, 256. 



Iodine voltameter for the measure- 

 ment of small currents, on the 

 use of an, 91. 



Iron wires, on the changes of length 

 produced in, by magnetization,345. 



Jaumann (G.) on the inconstancy of 

 the potential required for a spark, 

 396. 



Jones (H, C.) on the cryoscopic re- 



