INDEX. 



611 



89 ; on the geology of South America, 

 516; on the connection of certain vol- 

 canic phenomena, 584. 



Davidson (J. ), notice of, 279. 



Deaseand Simpson's discovery of the North- 

 west passage, 542. 



De la Rive ( Prof. ) on an optical phenome- 

 non observed at Mont Blanc, 1 22 ; on the 

 interference of electro-magnetic currents, 

 122. 



De Morgan (Prof.) on the relation between 

 the number effaces, edges, and corners 

 in a solid polyhedron, 323. 



Density of liquids, on the, 1. 



Despretz (M.) on the maximum density of 

 liquids, 1. 



Devonshire, geology of, 510, 564. 



Didelphis hortensis, a new species of opos- 

 sum, 215. 



Dimorphism of the chromate of lead, 387. 



Diodontus insignis, D. gracilis, and D. cor- 

 niger, habits of, 16. 



Diplodus gibbosus, 86. 



Dipus Mitchellii, a new species of the Au- 

 stralian Rodent, 96. 



Dublin, account of the magnetical obser- 

 vatory at, 119. 



Dumas (M.) on the constitution of some 

 organic acids, 381 ; on tartaric and para- 

 tartaric acids, 605. 



Dumasine, on, 108. 



Dynamics, geological, 517. 



Earth, on the Cavendish experiment for de- 

 termining the mean density of, 283. 



Earth-worm, vegetable mould produced by 

 the digestive process of, 89, 518. 



Earthquakes, theory of the cause of, 584. 



Eblanine, examination of, 98. 



Edinburgh Observatory, longitude of, 525. 



Ehrenberg (M.) on the adulteration of car- 

 mine, 462. 



Electricity: — chemical composition of the 

 electrical apparatus of the torpedo, 256; 

 current electricity, 18, 293, 311, 539; 

 Prof. Faraday's researches in, 206, 358, 

 426, 430; electrodynamic induction, 18; 

 electro-magnetic currents, interferenceof, 

 122; magnetic contact-breaker, 18; elec- 

 tro-magnetic motive machines, on, 190; 

 researches relative to the torpedo, 1 96 ; 

 peculiar voltaic conditions of iron and 

 bismuth, 48 ; voltaic, 225 ; voltaic com- 

 bination, 364 ; on the primary forces of, 

 486. 



Elliptical polarization, cause of, iO. 



Emmett (Lieut.-Col. ;, meteorological ob- 

 servations made at li\irmuda in 1836-37, 

 and notice of an aurora borealis seen in 

 low latitudes, 42. 



Entomology : — economy of several species 

 of hymenoptera, 14; on the family of 

 Fulgorida;, 93; Curtis's Guide to an 

 Arrangement of British Insects, 202; 



3 



several new species of insects of the fa- 

 mily of sacred beetles, 441 ; equations 

 of the fifth degree, on Abel's argument, 

 116. 



Equilibrium of fluids, on, 385. 



Equivalents of potash, soda, and silver, on, 

 324. 



Eye, on the polarizing structure in the cry- 

 stalline lens after death, 22; on cataract, 

 25. 



Falconer ( Dr. ) on additional fossil species 

 of quadrumana from the Sewalik Hills, 

 34. 



Faraday (Prof.) researches in electricity, 

 206, 358, 426, 430 ; corrected report of 

 his eleventh series of experimental re- 

 searches in electricity, 538. 



Farish (Prof.) notice of the late, 437. 



Feathers, process for taking impressions 

 from, 451. 



Felis Darwinii, on the, 213. 



Fellenberg (M.), method of dissolving iri- 

 dium, 141. 



Fermentation of sugar of milk, 139; action 

 of fermentation on a mixture of oxygen 

 and hydrogen gases, 607. 



Fish, fossil, 86. 



Fluids, aeriform, specific heats of, 101. 



F'luorine, on, 105. 



Fogs, low, and stationary clouds, 355. 



Forbes (Prof.) on the meteors of Nov. 12, 



85 ; researches on heat, 545. 



Fossil ferns, 95 ; fishes in the Lancashire 

 coal-field, 86 ; quadrumana, 34. 



Fresnel's optical theory of crystals, 73, 259, 

 341 ; wave-surface, method of finding 

 the equation to, 335. 



Frog, on the contractions of the, 1 97. 



Fulgoridae, on the family of, 93. 



Galictis, on the genus, 529. 



Gases contained in the blood, 300; oxygen 

 and hydrogen, action of fermentation on, 

 607. 



Gentianin, on, 221. 



Geological Society, 86, 284, 433, 508, 564. 



Geology: — fossil quadrumana, 34; addi- 

 tional fragments of the Siv atherium, 40 ; 

 fossil fishes in the Lancashire coal-field, 



86 ; geology of Zante, 87 ; on the form- 

 ation of mould, 89 ; on a hitherto un- 

 observed structure in certain trap rocks, 

 106 ; on the phenomena of mineral veins, 

 125 ; unity of the coal deposits of Eng- 

 land, 127 ; on indications of recent ele- 

 vations in Guernsey and Jersey, 284 ; on 

 the great basaltic district of India, 286 ; 

 Rev. W. Whewell's address at the anni- 

 versary of the Geological Society, 434, 

 508 ; descriptive geology, 508 ; geologi- 

 cal dynamics, 517; theory of volcanos, 

 533 ; of Devonshire, 510, 565» 569; of 

 Mazunderan, 571 ; of the Birmingham 

 and Gloucester railway line, 573 ; theory 



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