442 



INDEX. 



Droop (H. E.) on colour-sensation, 

 373. 



Dynamo-electric machines, on self- 

 regulating-, 275. 



Edlund (Prof. E.) on the passage of 

 electricity through rarefied air, 1. 



Electric accumulator, on a high- 

 pressure, 203. 



arc, on the resistance of the, 346. 



discharge, on a theory of the, 



in gases, 427. 



forces, on the change in the 



double refraction of quartz pro- 

 duced by, 132. 



motor, on the graphic represen- 

 tation of the law of efficiency of 

 an, 124. 



sparks, on the displacements 



and deformations of, 72. 



Electrical resistances, on a method 

 of measuring, 316 ; of selenium 

 cells, on the, 31. 



Electricity, on the passage of, through 

 rarefied air, 1 ; on the connexion be- 

 tween the units of magnetism and, 

 79. 



Electrolytic discharge, on dissym- 

 metry in the, 391. 



Electromagnets, on winding, 397. 



Elements, on the relations between 

 the heats of combination of the, 

 and their atomic weights, 42. 



Energy, on the conservation of, 35, 

 152, 228, 299. 



Ergometer, on a new form of, 87. 



Everett (Prof. J. D.) on forced vi- 

 brations, with applications to the 

 tides and to controlled pendulums, 

 73. 



Farey series, on the number of frac- 

 . tions contained in any, 251. 



Fluids, on the condensation of, on 

 solid bodies, 440. 



Force, on the meaning of the term, 

 248, 368.- 



Gardner (J. S.) on the Lower Eocene 

 section between Reculvers and 

 Heme Bay, 219. 



Gases, on the refraction-indices of, at 

 high pressures, 299 ; on a theory 

 of the electric discharge in, 427. 



Geikie (Dr. A.) on the pre-Cambrian 

 rocks of St. David's, 364. 



Geological Society, proceedings of 

 the, 60, 219, 297, 436.^ 



Glaciers, on the mechanics of, 63. 



Glazebrook (R. T.) on polarizing 



prisms, 352 ; on curved difiraction- 

 gratings, 414. 



Gray (T.) on seismographic appa- 

 ratus, 363. 



Hall (E. H.) on the "rotational coeffi- 

 cients " of various metals, 341. 



Heats of combination of the elements, 

 on the relations between the, and 

 their atomic weights, 42. 



Hicks (Dr. H.) on the metamorphic 

 rocks in parts of Ross and Inver- 

 ness shires, 221. 



Horse-power indicator, on a new 

 form of, 434. 



Hydrogen, on the photometric inten- 

 sity of the spectral lines of, 226. 



Inch- and metre-scales, on an arrange- 

 ment for dividing, 217. 



Iron, on effects of retentiveness in 

 the magnetization of, 246. 



Irving (Rev, A.) on the mechanics of 

 glaciers, 63 ; on the origin of val- 

 ley-lakes, 65. 



Lagarde (H.) on the mersurement 

 of the photometric intensity of the 

 spectral lines of hydrogen, 226. 



Lamb (Prof. H.) on the basis of sta- 

 tics, 187. 



Langley (S. P.) on the selective ab- 

 sorption of solar energy, 153. 



Laurie (A. P.) on the relations be- 

 tween the heats of combination of 

 the elements and their atomic 

 weights, 42. 



LeConte (J.) on the amount of car- 

 bon dioxide in the atmosphere, 46 ; 

 on apparent attractions and repul- 

 sions of small floating bodies, 47. 



Lippmann (G.) on the determination 

 of the ohm, 149. 



Liquid, on the vibrations of a cylin- 

 drical vessel containing, 385. 



Lockyer's theory of dissociation, on, 

 28. _ 



Mackintosh (D.) on the recency of 

 the close of the Glacial Period, 

 297. 



Madan (H. G.) on mica films for 

 polarizing purposes, 437. 



Magnetic circle, on a method of cal- 

 culating the amount of magnetism 

 of a, 389. 



field, on the alleged luminosity 



of the, 270. 



Magnetism, on the connexion between 

 the units of electricity and, 79; 

 on permanent, 257, 309. 



