INDEX. 



551 



Radiation, on attraction and repul- 

 sion accompanying, 81. 

 Rae (Dr. J.) on some physical pro- 

 perties of ice, 56. 

 Ramsay (Prof. A. C.) on the compa- 

 rative value of certain geological 

 ages, 143. 

 Rayleigh (Lord) on the vibrations of 

 approximately simple systems, 

 258 ; on a statical problem, 452. 

 Reynolds (Prof. O.) on surface-forces 

 caused by evaporation and conden- 

 sation, 146, 389 ; on the refraction 

 of sound by the atmosphere, 530. 

 Roscoe (Prof. H. E.) on a method of 

 measuring the intensity of the che- 

 mical action of total daylight, 220. 

 Rowland (H. A.) on the magnetic 

 permeability and maximum of mag- 

 netism of nickel and cobalt, 321. 

 Royal Society, proceedings of the, 65, 



143, 220, 303, 391, 471, 530. 

 Saline solutions, on the flow of, through 

 capillary tubes, 77 ; on the che- 

 mical constitution of, 391. 

 Schilling (Baron N.) on the constant 

 currents in the air and in the sea, 

 21, 97, 166. 

 Schuster (Dr. A.) on unilateral con- 

 ductivity, 251 ; on electrical vibra- 

 tions, 340 ; on experiments on a 

 magnetized copper wire, 535. 

 Schwendler (L.) on the general theory 

 of duplex telegraphy, 117; on 

 earth-currents, 315. 

 Sea, on the constant currents of the, 



21, 97, 166. 

 Sea- water, on the saltness of, 35. 

 Sharpe (S.) on comets and their tails, 



512. 

 Silver bromide, on the nature of the 



action of light upon, 80. 

 Solar spectrum, on displacement of 



the, 303. 

 Solids, on the action of, in liberating 



gas from solutions, 385. 

 Sound, on the application of the vi- 

 brations of, to the measurement of 

 electrical currents, 115; on the 

 refraction of, by the atmosphere, 

 530. 

 Sound-bearing waves, on a simple 

 apparatus for showing the inter- 

 ference of, 139. 

 Sound-wave, on the division of a, bv 



a layer of flame or heated gas, 

 222. 

 Spectroscope, on improvements in 



the construction of the, 116, 532. 

 Spectrum, solar, on displacement of 



the, 303. 

 Star-spectroscope, on a simple, 156. 

 Statical theorem, on a, 452. 

 Stewart (Prof. B.), experiments on a 



magnetized copper wire by, 535. 

 Stiffe (Lieut. A. W.) on the mud- 



craters of the Mekran coast, 230. 

 Stoietow (Prof. A.) on the magneti- 

 zation-functions of various iron 

 bodies, 200. 

 Stone (Dr. W. H.) on wind-pressure 

 in the human lungs during per- 

 formance on wind instruments, 

 113; on the fall in pitch of strained 

 wires through which a galvanic 

 current is passing, 115; on a sim- 

 ple arrangement by which the co- 

 loured rings of uniaxial and biaxial 

 crystals may be shown, 138. 

 Strings, on the vibrations of, 78. 

 Sun, on the temperature of the, 158, 



233, 395. 

 Telegraphy, on the general theory of 



duplex, 117- 

 Temperament, or the division of the 



octave, on, 507. 

 Thayer (A. S.) on the polarization of 



the plates of condensers, 178. 

 Thermometer, on a new deep-sea, 



306. 

 Thomson (Sir W.) on the perturba- 

 tions of the compass produced by 

 the rolling of the ship, 363. 

 Tides, on the cause of, 157. 



and waves, on, 204. 



Toepler (Prof.) on the electric spark, 



160. 

 Tomlinson (C.) on the action of solids 

 and of friction in liberating gas 

 from solutions, 385. 

 Trade- winds, on the origin of the, 



24. 

 Tylor (A.) on tides and waves, 204. 

 Vaughan (D.) on the physics of the 



internal earth, 237. 

 Vibrations of approximately simple 

 systems, on the, 258 ; of a compo- 

 site sonorous wave, on the decom- 

 position of the, into its elementary 

 pendulum- vibrations, "266. 



