INDEX. 



567 



Judd (Prof. J. W.) on the Jurassic 

 deposits which underlie London, 

 557. 



Kamensky (G.) on the electric con- 

 ductivity and other properties of 

 the copper-antimony alloys, 270. 



Kundt (A.) on a method of investi- 

 gating the thermoelectricity and 

 piezoelectricity of crystals, 328. 



Langley (S. P.) on the determination 

 of wave-lengths in the invisible 

 prismatic spectrum, 194. 



L armor (Prof. J.) on electro-magnetic 

 induction in conducting-sheets and 

 solid bodies, 1, 326. 



Light, on spherical waves of, 413; 

 on the absolute standard of, 563. 



Listing's Topologie, on, 30. 



LiveiDg (Prof.) on the temperature 

 of sun-spots, 302. 



Lodge (Prof. 0. J.) on the pheno- 

 mena exhibited by dusty air in the 

 neighbourhood of strongly illumi- 

 nated bodies, 214. 



Magnetic compass, on an induction, 

 78. 



forces, on the measurement of, 



by means of hydrostatic pressure, 

 447. 



inclination, on a new method of 



determining the, 407. 



Magnetism, on the determination of 

 the moments of, by the balance, 

 75 ; on the horizontal component 

 of the earth's, at Oxford, 438. 



Mascart (Prof.) on an induction mag- 

 netic compass, 78. 



Mercury, on the purification of, 24. 



Mills (Dr. E. J.) on melting-point 

 and boiling-point as related to 

 chemical composition, 173. 



Muir (T.) on the general equation of 

 differences of the second order, 115. 



Natural Sciences, on a classification 

 of the, 74. 



Newcomb (Prof. S.) on some points 

 in climatology, 142, 275. 



Nicol (W. W. J.) on equilibrium in 

 salt-solutions, 150 ; on saturation 

 of salt-solutions, 537. 



Nitrogen, on the solidification of, 158. 



Observations, on the reduction of, 

 135. 



Ohmmeters, on the construction of, 

 311. 



Oxygen, on the temperature obtained 

 by, in a state of ebullition, 158 ; on 



the boiling-point of, under ordinary 

 atmospheric pressure, 490. 



Parkinson (C.) on the Droitwich 

 brine -springs, 322. 



Pernter (J. M.) on some psychio- 

 metrical investigations, 412. 



Perry (Prof. J.) on direct-reading 

 electro-measuring instruments, and 

 a non-sparking key, 304. 



Pettersson (0.) on the properties of 

 water and ice, 156. 



Piezoelectricity of crystals, on a 

 method of investigating the, 328. 



Power, on a new device for measur- 

 ing, 159. 



Probabilities, on the mathematical 

 theory of, 510. 



Psychrometrical investigations, on 

 some, 412. 



Quaternions, on the solution of a class 

 of equations in, 392. 



Quincke (Prof. Gr.) on the change in 

 the volumes and refractive indices 

 of fluids produced by hydrostatic 

 pressure, 65 ; on the measurement 

 of magnetic forces by means of 

 hydrostatic pressure, 447. 



Rainbows, on, 61, 148, 244. 



Rayleigh (Lord), acoustical observa- 

 tions by, 188. 



Refractive indices of fluids, on the 

 change produced by hydrostatic 

 pressure in the, 65. 



Resistance-balance, on a modified, 

 507. 



-coils, on the adjustment of, 



265. 

 Resistances, on a practical point in 



connexion with the comparison of 



398. 

 Righi (A.) on Hall's phenomenon, 



80. 

 Rowland (Prof.) on the propagation 



of an arbitrary electro-magnetic 



disturbance, on spherical waves of 



light, and the dynamical theory of 



diffraction, 413. 

 Salt-solutions, on equilibrium in, 



150 ; on saturation of, 537. 

 Serpentine and associated rocks of 



Porthalla Cove, on the, 324. 

 Shaw (W. N.) on a practical point 



in connexion with the comparison 



of resistances, 398. 

 Smith (F. J.) on a new form of roller 



for the disk-and-roller integrator, 



59. 



