'50 



INDEX. 



Electric conductivity along a glow 

 discharge and in flames, on a 

 method of measuring the, 352. 



field constants, on, 201. 



Electromagnetic waves, on, 90, 143 ; 

 on the propagation of, round the 

 earth, 365. 

 Electroscopes, on a method of mea- 

 suring the capacity of, 24-5. 

 Elliptic cylinders, potentials of, 465. 

 Everett (Miss A.) on proofs of 

 elementary theorems of oblique 

 diffraction, 480. 

 Extinction, on the molecular theory 



of, 269. 

 Eye, on the kinematics of the, 685. 

 Field constants; on electric and mag- 

 netic, 20J . 



Films, on the optical properties of 



metallic, 98. 

 Flames, on the conductivity in, 352. 



Fluids, on the spreading of, on glass, 

 49 ; on the flow of, past a rigid 

 boundary, 433 ; on the motion of, 

 in a vortex, 597. 

 Force-function in the theory of rela- 

 tivity, on the, 113. 



Friction, on static, 32. 



Gardiner (C. 1.) on the Silurian rocks 

 of May Hill, 742. 



Gases, on the ignition of, by hot 

 wires, 613. 



Geological Societv. proceedings of 

 the, 267, 425, 496, 662, 740. 



Gilbert (C. J.) on high-level sands 

 and gravels at Little Heath, 662. 



Gilligan (Dr. A.) on sandstone dykes 

 in the Cumberland coalfield, 499 ; 

 on the millstone grit series of 

 Yorkshire, 743. 



Glass, on the spreading of fluids on, 49. 



Glow discharge, on the conductivity 

 along a, 352. 



Gold, on the series system in the 

 spectrum of, 1. 



Gold-leaf electroscopes, on a method 

 of measuring the capacity of. 245. 



Gravitation, on light and, 737. 



Gray (Prof. A.) on electric and mag- 

 netic field constants, 201. 



Greenhill (Sir G.) on the Bessel- 

 Olifford function and its applica- 

 tions, 501. 



Gwyther (R. F.) on the equations 

 for material stresses, 235. 



Hammick (D. L.) on latent heat and 

 surface energy, 240. 



Hardy (J. K.) on static friction and 

 lubricating properties, 32. 



Hardy (W. B.) on static friction and 

 lubricating properties, 32 ; on the 

 spreading of fluids on glass, 49. 



Harrison (J. B.) on the coral-lime- 

 stones of Barbados, 747. 



Heat, on the conduction of, 200 ; 

 on latent, and surface energy. 

 240. ' 



Hicks (Prof. W. M.) on the series 

 system in the spectrum of gold, 1 ; 

 on the value of the silver oun, 301 ; 

 on the mass carried forward by a 

 vortex, 597. 



Hollingworth (Capt. J.) on a new 

 form of catenary, 452, 748. 



Houstoun (Dr. R. A.) on a theorv of 

 colour vision, 402. 



Hydrogen, on the coefficient of vis- 

 cosity of, 582. 



Insulators, on the thermal conducti- 

 vity of solid, 705. 



Iron rods, on the magnetic effects of 

 vibration ir, 528. 



Isotopes, on the vapour pressure and 

 affinity of, 173; on the possibility 

 of separating, 182. 



Jackson (L. (J.) on the stability of 

 atoms, 256. 



Jeffreys (Dr. H.) on the force-function 

 in the theory of relativity, 1 13 ; 

 on the derivation of the Lorentz- 

 Einstein transformation, 349 ; on 

 some aspects of the theoiy of 

 probability, 715. 



Kendall (Prof. P. F.) on wash-outs 

 in coal-seams, 496. 



Kinematics of the eye, on the, 685. 



Kitson (A. E.) on the geology of 

 Southern Nigeria, 746. 



Lamb (Prof. H.) on the kinematics 

 of the eye, 685. 



Latent heat and surface energy, en, 

 240. 



Leide (A. B.) on precision-measure- 

 ments in the X-ray spectra, 647. 



Light, on the molecular theory of 

 refraction, reflexion, and extinction 

 of, 268 ; on the diffraction of, by 

 apertures with curvilinear bound- 

 aries, 289 ; on proofs of elementary 

 theorems of oblique refraction of, 

 480 ; on terrestrial refraction of, 

 546 ; on the scattering of, in the 

 refractive media of the eye, 568 ; 

 and gravitation, on, 737. 



