INDEX. 



563 



Eccaleobion, Bucknell's, 544. 



Echo from the bed of the ocean, 195. 



Eclipses, on, 198. 



Eggs, machine for hatching, 544. 



Ehrenberg (Prof.) on a leather-like 

 substance composed of infusoria, 65. 



Electric and nervous forces, relations 

 of the, 369. 



Electric currents, on measuring the 

 relative tension of, 266, 339. 



Electric force of the gymnotus, 358. 



Electrical science, on certain principles 

 in, 461, 



Electricity, atmospheric, short sum- 

 mary of the laws of, 219. 



■ , on the elementary laws of, 320. 



Electrolysis, supply of mixed gases for 

 Drummond's light by, 163 ; of se- 

 condary compounds, on the, 317. 



Electro-magnetic currents, on, 164. 



Electro-magnetism, l6l ; its applica- 

 tion as a motive power, .164, 350. 



Electrometers, 218. 



Equations, algebraical, on the general 

 solution of, 165. 



Equations of coexistence, on rational 

 derivation from, 428. 



Equivalent of carbon, on the, 62. 



Essex, on the wells formed in the 

 gravel and London clay in, 531. 



Faraday (Prof.), researches in electri- 

 city, 15th series, 358. 



Farquharson (Rev. J.) on a geome- 

 trical measurement of the height of 

 the aurora borealis, 326. 



Fehling (M.) on the preparation of 

 fulminic acid, 77. 



Ferguson (J.) on the cause of the 

 holes that occur perforating sheets 

 of melting ice, 305. 



Fibrin, analysis of, 485. 



Figure of the earth, 188, 322. 



Filhol (M.) on the preparation of 

 chlorosalts, 411. 



Fish, Indian, production of isinglass 

 from, 547. 



Fluid, incompressible, on the equili- 

 brium of, 322. 



Fluoric acid, on its supposed existence 

 in animal matter, 558. 



Foci of magnetic intensity, 181. 



Forbes (Prof.) on the colours of the 

 atmosphere, 25 ; letter respecting 

 Melloni's paper on the polarization 

 of heat, in Scientific Memoirs, part 

 vi., 380 ; on the intensity of reflec- 

 ted light and heat, 479. 



Forbes (Prof. P.) on the application 

 of electro-magnetism as a motive 

 power, 350. 



[For fossil remains see Palaeontology.] 



Formic aether, 251. 



Fownes (G) on the equivalent of 

 carbon, 62. 



Fulminic acid, preparation of, 77. 



Fungi, an excellent India ink prepared 

 from, 71- 



Galvanic battery, its use in blasting, 60. 



Galvanism, I6I ; galvanic spark, 349. 



Gases, mixed, their supply for Drum- 

 mond's light by electrolysis, 163. 



Gauss (M.) on the theory of magnet- 

 ism, 254. 



Geological Society, proceedings of, 

 396, 531. 



Geolog)' : on the older stratified rocks 

 of North Devon, 109 ; Metamorph- 

 ism, 126 ; on the equivalents of the 

 Cambrian and Silurian systems in 

 Belgium, 146 ; on the sand-pipes 

 in the chalk near Norwich, 257, 455 ; 

 on the culm- and plant-bearing beds 

 of Devon and Cornwall, 293 ; tran- 

 sition or grauwacke system of So- 

 merset, Devon, and Cornwall, 396 ; 

 climate of the newer pliocene terti- 

 ary period, 398 ; on some fossil and 

 recent shells collected in Canada, 

 399 ; on the wealden of the North 

 of Germany, 401 ; on the older rocks 

 of Devon and Cornwall, 401 ; the 

 fish beds of the old red sandstone of 

 Cromartie, 405 ; on the London and 

 plastic clay formations of the Isle of 

 Wight, 405 ; slaty micaceous sand- 

 stone impressed with worm-tracks, 



406 ; on the relative ages of crag, 



407 ; on the older rocks of Killarney 

 and Dublin, 442 ; on wells formed 

 in the gravel and London clay, 531 ; 

 on the remains of insects and a new 

 genus of Isopodous Crustacea, 534 ; 

 on the geological relations of the 

 rocks of the South of Ireland, 536 ; 

 on bones of mammoths found in the 

 sea, 538 ; fossil trees, 539 ; organic 

 remains in the London clay, 540 ; 

 on the old red sandstone of the 

 counties of Morray, Nairn, BanflF, 

 &c., 541. 



Geometrical porisms, on the functional 

 symmetry exhibited in the notation 

 of, 129. 



Geometrical proposition, new, 41. 



