INDEX. 



535 



Kathode disk in the Crookes' tube, on 

 a rotational motion of the, 123. 



Lake (P.) on the Lingula-flags and 

 igneous rocks of the neighbour- 

 hood of Dolgelly, 371. 



Lampa (Dr. A.) on the refractive 

 indices of some substances for very 

 short electrical waves, 207. 



Lamps, on the Edison effect in glow, 

 52. 



Larmor (J.) on the theory of moving 

 electrons and electric charges, 201. 



Lawrence (R. R.) on the melting- 

 points of aluminium, silver, gold, 

 copper, and platinum, 37. 



Light, on the longitudinal compo- 

 nent in, 260; on the influence of 

 temperature on the refraction of, 

 by metals, 532. 



Liquid state, on the continuity of 

 isothermal transformation from 

 the, to the gaseous state, 231. 



Liquids, on high tensions in moving, 

 111. 



Lussano (Dr. S.), a lecture experi- 

 ment on diathermancitj^, 208. 



McAulay (Prof. A.) on the wave- 

 surface and rotation of polarization 

 plane in an aeolotropic electro- 

 magnetic medium, 224. 



MacGregor (Prof. J. G.) on the 

 hypotheses of abstract dynamics 

 and the question of the number of 

 elastic constants, 240. 



Magnetic field due to an elliptical 

 current at a point in its plane 

 within it, on the, 107. 



, on the electric discharge 



in a, 245 ; on a damping action of 

 the, on rotating insulators, 288 ; on 

 the hypothesis of participation of 

 matter iu the motion of the, 314. 



Magnetism, on the action of, on 

 electromotive force, 288 ; on the 

 possibility of explaining the phe- 

 nomena of, by the hypothesis of 

 participation of matter in the 

 motion of the magnetic held, 314. 



Mather (T.) on galvanometers, 442. 



Megohms, on carbon, for high volt- 

 ages, 450. 



Melting-points of aluminium, silver, 

 gold, copper, and platinum, on the, 

 37. 



Metals, on the melting-points of 

 various, 37 ; on the influence of 



temperature on the refraction of 

 light by, 532. 



Microscopic vision, on, 167, 332, 

 423, 499. 



Miller (Dr. G. A.) on the operation 

 groups of order 8p, p being any 

 prime number, 195. 



Mordey (YV.M.) on carbon megohms 

 for high voltages, 450. 



Nipher (F. E.) on a rotational motion 

 of the kathode disk in the Crookes' 

 tube, 123. 



Operation groups of order 8p, p being 

 auy prime number, on the, 195. 



Optical images, on the theory of, 

 with special reference to the mi- 

 croscope, 167, 332. 



Osmotic pressure, on, 289. 



Oumoff (N.) on electric images in 

 the field of a Hittorf 's (Crookes') 

 tube, 308. 



Pavlow (Dr. A. P.) on the classifica- 

 tion of the strata between the 

 Kimeridgian and the Aptian, 120. 



Periodic system of the elements, on 

 the analytical representation of 

 the, 277. 



Platinum, on the melting-point of, 

 37. 



Polarization plane, on the rotation 

 of, in an aeolotropic electromag- 

 netic medium, 224. 



Pollock (J. A.) on some experiments 

 with Rontgen's radiation, 453. 



Poynting (Prof. J. H.) on osmotic 

 pressure, 289. 



Preller (Dr. C. S. Du R.) on the 

 Pliocene glaciation, pre-glacial 

 valleys, and lake-basins of Sub- 

 alpine Switzerland, 117. 



Preston (T.) on the continuity of 

 isothermal transformation from 

 the liquid to the gaseous state, 

 231. 



Piilfrich (C.) on the influence of 

 temperature on the refraction of 

 light by metals, 532. 



Radiometer motion, on, 373, 476. 



Rayleigh (Lord) on the theory of 

 optical images, with special refer- 

 ence to the microscope, 167; on 

 the separation of gases by diffu- 

 sion and similar processes,' 493. 



Refractive indices of some sub- 

 stances for very short electrical 

 waves, on the, 207. 



