﻿INDEX. 



583 



Peddie (Dr. W.) on torsional oscil- 

 lations of wires, 35. 



Perry (Prof.) on Prof. Henrici's har- 

 monic analyser, 125 : on magnetic 

 shielding by a hollow iron cylinder, 

 270. 



Phosphorus, on the rate of oxidation 

 of, 505. 



Photoelectric current, on the, 158. 



Piesch (B.) on alterations of the 

 electrical resistance of aqueous 

 solutions and of galvanic polariza- 

 tion with pressure, 336. 



Planimeter, on the hatchet, 265. 



Polarization, on alterations of gal- 

 vanic, with pressure, 336. 



Pressure, on a new apparatus for the 

 production of high, 160; on the 

 relation between the coefficients 

 of, in thermometry, 371. 



, volume, and temperature of 



rarefied gases, on the relations of, 

 301. 



Quartz, on the occurrence of perlitic 

 cracks in, 245. 



Q.uartzites, on the origin of certain, 

 244. 



Quaternions, on the geometrical in- 

 terpretation of log Vq in, 143. 



Quincke (Prof. G.) on vortex mo- 

 tions in air, 159. 



Raisin (Miss C. A.) on some of the 

 older fragmental rocks of North- 

 west Caernarvonshire, 576. 



Ramsay (Prof. W.) on the passage 

 of hydrogen through a palladium 

 septum, 206; on the relations of 

 pressure, volume, and temperature 

 of rarefied gases, 301. 



Rayleigh (Lord) on the minimum 

 current audible in the telephone, 

 285 ; on a quantitative theory of 

 the telephone, 295 ; on the ampli- 

 tude of aerial waves which are but 

 just audible, 365. 



Resistance, on alterations of elec- 

 trical, with pressure, 336. 

 Resonance, on electrical, 182. 

 Ring, on the self-induction and on 



the gravity-potential of a, 456. 

 Rudski (Prof. M. P.) on the rigidity 



of the earth, 218. 

 Rutley (F.) on the origin of certain 



novaculites and quartzites, 244. 

 St. John (O. E.) on wave-lengths of 



electricity on iron wires, 425. 

 Schists, on the conversion of com- 

 pact greenstones into, 240. 



Self-induction of a ring, on the, 456. 



Sharp (A.) on an harmonic analyser, 

 121. 



Shells, on the local alteration of the 

 material of spherical, under uni- 

 form surface-pressure, 161. 



Shielding, on magnetic, by a hollow 

 iron cylinder, 270. 



Skinner (S.) on the Clark cell when 

 producing a current, 271. 



Solutions, on the surface-tension and 

 osmotic pressure of, 279. ' 



Solvents, on the velocities of the ions 

 and relative ionization -power of, 

 392. 



Sound, on the velocity of, in air, 

 gases, and vapours for pure notes 

 of different pitch, 249; on the 

 amplitude of waves of, which are 

 but just audible, 365. 



Spectra of metals, on a new method 

 for mapping the, 379. 



Spectroscope, on an improved form 

 of Littrow, 137. 



Spectroscopes, on fixed-arm, 337. 



Spectrum of the electric discharge 

 in liquid oxygen, air, and nitrogen, 

 on the, 235. 



Spheres, on the local alteration of 

 the material of isotropic, under 

 uniform surface-pressure, 161. 



Spring, on the vibrations of a loaded 

 spiral, 386. 



Stoney (Dr. G. J.) on the " electron," 

 or atom of electricity, 418. 



Strain, on the level of no, within a 

 solid earth, 131. 



Stratton (Prof. S. W.) on a new ap- 

 paratus for the production of high 

 pressure, 160. 



Sulphur, on the rate of oxidation of, 

 521. 



Surface-tension of mixed liquids, on 

 the, 188 ; and osmotic pressure of 

 solutions, on the, 279. 



Sutherland (W.) on the attraction of 

 unlike molecules, 1, 188. 



Tatnall (R.) on a new method for 

 mapping the spectra of metals, 379. 



Teall (J. J. H.) on the banded struc- 

 ture of some Tertiary gabbros, 

 573. 



Telephone, on the minimum current 

 audible in the, 285 ; on a quanti- 

 tative theory of the, 295. 



Telephonic measurement of electro- 

 motive force, on, 558. 

 Temperature, volume, and pressure 



