﻿554 



INDEX. 



Christiansen (C.) on the refractive 

 phenomena of an alcoholic solution 

 of fuchsin, 244. 



Coal-fields, on the extension of the, 

 beneath the newer formations of 

 England, 306. 



Cockle (Sir J.) on fractional criticoids, 

 360. 



Colouring-matters, on the use of the 

 spectral apparatus in the quantita- 

 tive determination of, 482. 



Cometary orbits, on the probable cha- 

 racter of, 44. 



Copper, on the electro-deposition of, 

 41. 



Corona seen in total eclipses of the 

 sun, on the, 225. 



Criticoids, on fractional, 360. 



Daniell's battery, on a constant form 

 of, 538. 



Davis (A. S.) on the probable charac- 

 ter of cometary orbits, 44. 



Diamagnetism, on some experiments 

 illustrative of, 15. 



Dielectrics, on the measurement of 

 the specific inductive capacity of, 

 543. 



Dudgeon (Dr. R. E.) on subaqueous 

 vision, 350. 



Earth, on the constitution of the solid 

 crust of the, 307. 



Eclipse of Dec. 22, 1870, observations 

 of the, 396. 



Edlund (E.) on the electromotive 

 force on the contact of different 

 metals, 18. 



Electrical resistance, on the measure- 

 ment of, 314. 



Electricity, on the relations of static, 

 and magnetism, 297, 368, 390 ; on 

 a new method of obtaining, from 

 mechanical force, 310. 



Electrified and magnetized bodies, on 

 a theory of the mutual action be- 

 tween, 368. 



Electromotive force, on the contact of 

 different metals, on the, 18. 



forces of Grove's and Daniell's 



elements, researches on the, 157. 



Electrophorus, investigations on the, 

 214. 



Ellipsoid, on the geodesic lines on an, 

 534. 



Eye-screens, on the use of, in tele- 

 scopic and other researches, 79. 



Flame, on the examination of the 



Bessemer, with coloured glasses 

 and the spectroscope, 1 . 



Fuchsin, on the refractive phenomena 

 of an alcoholic solution of, 244. 



Gases, on the influence of density and 

 temperature on the spectra of in- 

 candescent, 190; on the cause of 

 the interrupted spectra of, 291. 



Geological Society, proceedings of 

 the, 71, 154, 318, 480, 546. 



Gibson (J. C.) on the measurements 

 of the specific inductive capacity of 

 dielectrics, 543. 



Glaciers, on the cause of the motion 

 of, 81 ; observations on, 485. 



Gore (G.) on fluoride of silver, 309. 



Gun-cotton, on a curious property of, 

 39. 



Guthrie (F.) on some experiments 

 illustrative of magnetism and dia- 

 magnetism, 15; on approach caused 

 by vibration, 405. 



Guyot (Dr.) on the forms and forces 

 of matter, 406. 



Hall (M.) on the determination of the 

 height of the atmosphere, 353. 



Heat developed in the combination 

 of acids and bases, on the, 29. 



Heath (Rev. J. M.) on athermogenic 

 condensation, 127. 



Heats, on the specific, of some liquids, 

 134. 



Heim (A.) on glaciers, 485. 



Heller (Prof. A.) on a barometer with- 

 out mercury, 401. 



How (Prof.) on the mineralogy of 

 Nova Scotia, 270. 



Huggins (Dr.) on a registering spec- 

 troscope, 544. 



Hull (E.) on the geological age of the 

 Ballycastle coal-field, 155; on the 

 extension of the coal-fields beneath 

 the newer formations of England, 

 306. 



Humidity, on the influence of, on ba- 

 rometric pressure, 325. 



Ice-calorimeter, description of the, 

 161. 



Iron, on the magnetism of solid sul- 

 phate of, 15. 



Kohlrausch (F.) on some hydro- and 

 thermo-electric forces, reduced to 

 Siemens's unit of resistance and 

 Weber's unit of current, 157. 



Laughton (J. K.) on barometric dif- 

 ferences and fluctuations, 325, 429. 



