466 



INDEX. 



Earths, on the spectra of some, 

 302. 



Edlund (Prof. E.) on the path of 

 electrical induction- and disjunc- 

 tion-currents through gases of va- 

 rious densities and between poles 

 of different shapes, 14. 



Electric current, on the use of the, in 

 calorimetry, 142. 



spark, on the duration of the, 



78. 



Electrical discharge, researches on the, 

 42. 



induction- and disjunction-cur- 

 rents, on the path of, through 

 gases, 14. 



resistance, on a simple method 



of constructing high, 41. 



Electricity, on the molecular theory 

 and laws of, 390. 



Electrodynamic spirals, on the mag- 

 netism of, 264. 



Electrolytes, on the extension of 

 Ohm's law to, 227. 



Electromotive force, on the influence 

 of heat on, 310. 



Electroscopic experiments, on a cause 

 of error in, 128. 



Equations, on the solution of linear 

 partial differential, 35, 149. 



Equilibrium, experimental and theo- 

 retical researches into the figures of, 

 of a liquid mass without weight, 355. 



Erbia, on the spectrum of, 302. 



Flexure, on the cause and theoretic 

 value of the resistance of, in beams, 

 130. 



Gases, on internal work in, 81, 19/, 

 268 ; on the compressibility of, 

 under high pressures, 146. 



Geodesic lines on an oblate spheroid, 

 on the, 329. 



Geological Society, proceedings of 

 the, 68,136, 225, 309, 380. 



Gibbs (Dr. W.) on the measurement 

 of wave-lengths by means of indices 

 of refraction, 177; on liquids of 

 high dispersive power, 229 ; on 

 tests for the perfection and paral- 

 lelism of plane surfaces of glass, 

 311. 



Glaciers, on the cause of the descent 

 of, 1, 153. 



Glass, on tests for the perfection and 

 parallelism of plane surfaces of, 

 311. 



Gore (G.) on the molecular move- 



ments and magnetic changes in iron. 

 170 ; on the magnetism of electro- 

 dynamic spirals, 264. 



Granites of Scotland, on the consti- 

 tuent minerals of the, 59. 



Grehant (N.) on the rapidity of the 

 absorption of carbonic oxide by the 

 lungs, 150. 



Guthrie (Prof. F.) on approach caused 

 by vibration, 345. 



Hagenbach (E.) on the melting of 

 leaden projectiles by their impact 

 upon an iron plate, 462. 



Haughton (Rev. S.) on the constitu- 

 ent minerals of the granites of Scot- 

 land, 59. 



Heat, on the interchangeability of, 

 and mechanical action, 51, 103, 

 218, 429 ; on a mechanical theo- 

 rem applicable to, 122; on the in- 

 fluence of, on electromotive force, 

 310 j on the radiation of, from the 

 moon, 372. 



Heath (Rev. J. M.) on the inter- 

 changeability of heat and mecha- 

 nical action, 51, 218, 429. 



Heights, on contour-lines and mea- 

 surement of, 421. 



Heppel (J. M.) on the theory of con- 

 tinuous beams, 446. 



Hills and dales, on, 421. 



Huggins (Dr. W.) on the spectra of 

 erbia and some other earths, 302. 



Huxley (Prof.) on a new genus of Di- 

 nosauria, 68 ; on the affinity be- 

 tween the Dinosaurian reptiles and 

 birds, 69 ; on the Dinosauria of the 

 trias, 70. 



Iron, on the molecular movements 

 and magnetic changes in, 170. 



Jamin (J.) on the use of the electric 

 current in calorimetry, 142. 



Kcenig (R.) on the fixed notes cha- 

 racteristic of the various vowels, 

 145. 



Kohlrausch (F.) on the extension of 

 Ohm's law to electrolytes, and on 

 the numerical determination of the 

 resistance of dilute sulphuric acid, 

 227. 



Kundt (A.) on the boiling in conjunc- 

 tion of two liquids which do not 

 mix, 463. 



Laplace's coefficients, on the tqua- 

 tion of, 434. 



Leclanche's manganese elements, ob- 

 servations on, 460. 



