470 



INDEX. 



Copper, on the analysis of alloys con- 

 taining 1 , 14. 



Croll (Dr. J.) on the origin of ne- 

 bula?, 1 ; on the cataclysmic 

 theories of geological climate, 148. 



Grova (A.) on the spectrometric in- 

 vestigation of some sources of light, 

 814. 



Cryohvdrates and cryogens, on, 35, 

 105." 



Davis (A. S.) on the formation of 

 comets' tails, 459. 



Debray (H.) on the dissociation of 

 the oxides of the platinum group, 

 394. 



Deville (H. Ste. -Claire) on the disso- 

 ciation of the oxides of the plati- 

 num group, 394. 



Dicarbopyridenic acid and salts, 21. 



Dilatation, on a universal law respect- 

 ing the, of bodies, 397. 



Dipicoline, on some compounds of, 30. 



Disruptive discharge in air, on the 

 effect of variation of pressure on 

 the length of, 185. 



Draper (Prof. H.) on the solar eclipse 

 ofJan. 29th, 1878, 318. 



Dvorak (V). on acoustic repulsion, 

 225. 



Earth, on the figure of the, 81 ; on 

 the properties of the matter com- 

 posing the interior of the, 263. 



Edison (Dr. J. A.) on the sonorous 

 voltameter, 468. 



Edlund (Prof. E.) on unipolar induc- 

 tion, atmospheric electricity, and 

 the aurora borealis, 289, 360, 423. 



Electrical discharges in insulators, 

 on, 438. 



Electricity, researches on atmo- 

 spheric," 289, 360, 423; on the ex- 

 citation of, by pressure and fric- 

 tion, 316. 



Electrodes, on the depolarization of 

 the, by solutions, 159. 



Electromagnets, on the resistance of 

 telegraphic, 177. 



Ennis (J.) on the origin of the power 

 which causes the stellar radiations, 

 216. 



Fielden (Capt, H. W.) on the geolo- 

 gical results of the Polar expedi- 

 tion, 71. 



Fluid-motion, on the applicability of 

 Lagrange's equations in certain 

 cases of, 354. 



Foyaite, on, 153. 



Fritseh (H.) on the excitation of elec- 

 tricity by pressure and friction, 316. 



Gases, on the action of permanganate 

 of potash on certain, 288 ; on the 

 mechanical theory of Crookes's 

 stress in, 401. 



Geikie (Prof. J.) on the glacial phe- 

 nomena of the Outer Hebrides, 146. 



Geological climate, on the cataclys- 

 mic theories of, 148. 



Geolgical Society, proceedings of the, 

 68 ? 146, 233, 310. 



Glacial period, on the distribution of 

 ice during the, 149. 



Glaisher (J. W. L.) on multiplication 

 by a table of single entry, 331. 



Gordon (J. E. H.) on the eftect of 

 variation of pressure on disruptive 

 discharge in air, 185. 



Gray (T.) on the determination of 

 magnetic moments in absolute 

 measure, 321. 



Greenstones, on the so-called, of 

 Cornwall, 69. 



Guthrie (F.) on salt-solutions and 

 attached water, 35, 105. 



Hautefeuille (P.) on the crystalliza- 

 tion of silica, 78. 



Heat, on the actinic theory of, 79 ; 

 on the mechanical theory of, 236, 

 237, 400. 



Heaviside (O.) on the resistance of 

 telegraphic electromagnets, 177; 

 on a test for telegraph lines, 436. 



Henness}' (Prof. H.) on the proper- 

 ties of the matter composing the 

 interior of the earth, 263. 



Hicks (Dr. H.) on the metamorphic 

 rocks of Loch Maree, 150. 



Hood (T. J.) on the laws of chemical 

 change, 371. 



Hughes (Prof.) on the physical action 

 of the microphone, 44. 



Hydrodynamic problems in reference 

 to the theory of ocean cm-rents. 

 192. 



Induction, researches on unipolar, 

 2S9, 3G0, 423. 



Insulators, on electrical discharges 

 in, 438. 



Isopvridine, on some compounds of, 

 28. 



Jamieson (T. F.) on the distribution 

 of ice during the glacial period, 

 149. 



