I N D E X. 



53H 



\ 



of primaeval seas, afforded by the 

 remains of colour in fossil Testacea, 

 437. 



Foucault's pendulum experiments, 

 observations on, 379. 



Fi-anz (R.) on the conductibility of 

 metals for beat, 33. 



Fraxinine, on the nature of, 501. 



Galvanism, on the mechanical values 

 of distributions of, VJ2. 



Gassiot (J. P.) on some experiments 

 made with RuhmkorfTs induction 

 coil, 97. 



Genth (Dr. F. A.) on a new meteorite 

 from New Mexico, 378. 



Geology of Suffolk, on the, 447- 



GiUett (W. S.) on a new and more 

 coiTect method of determining the 

 angle of aperture of microscopic 

 object-glasses, 368. 



Gilliss (Lieut.) on a series of mag- 

 netical observations made across 

 the Pampas, 53. 



Gladstone (Dr. J. H.) on chemical 

 alKnity among substances in solu- 

 tion, 372. 



Gold, on the detection of, in lead and 

 its compounds, 12f). 



Gore (G.) on the electro-deposition 

 of aluminium and silicium, 227. 



Goret (M.j on the production of ozone 

 by the decomposition of water at 

 low temperatures, 459. 



Grassmann (Prof.) on the theory of 

 compound colours, 254. 



Groups, on the theory of, 40. 



Grove (W. R.) on the electricity of 

 the blowpipe flame, 47- 



Gyroscope, obsei-vations on Fessel's, 

 '522. 



Haidinger (W.) on the colours of 

 mausite, 215. 



Hamilton (Sir W. R.) on some ex- 

 tensions of quaternions, 492. 



Hansen's electro-magnetic engraving 

 machine, descri])tion of, 527. 



Haughton (Rev. S.), account of ex- 

 l)eriments to determine the veloci- 

 ties of the rifle bullets commonly 

 used, 390. 



Heart, on the nerves which supply 

 the muscular structure of the, 51. 



Heat, on the mechauic:d action of, 1 , 

 111, 172, 2:59; on the conducti- 

 bility of metals for, 33; on the 

 geometrical rejirescntation of the 



expansive action of, 288 ; produced 

 by an electric discharse, on the, 

 297, 347, 348, 428 ; on the imiform 

 motion of, in homogeneous solid 

 bodies, and its connexion with the 

 mathematical theory of electricity, 

 502. 



Heating of buildings, on the oeconomy 

 of the, 138. 



Helicea, on the growth of the, 364. 



Henry (M. O.) on the occurrence of 

 nickel and cobalt in some mineral 

 springs, and on a method for their 

 isolation, 149. 



Herapath (Dr. W. B.) on the manu- 

 facture of artificial tourmalines, 352. 



Hirst (Dr.) on the progress of the 

 physical sciences, 153. 



Hooker (Dr. J. D.) on the structure 

 and affinities of Triffonocarpon, 515. 



Hunt (T. S.) on the composition and 

 metamorphoses of some sedimen- 

 tary rocks, 233; on the chemical 

 composition of recent and fossil 

 Lingidce, and some other shells, 

 335; description and analysis of 

 two mineral species, 499. 



Hydroferrocyanic acid, on the prepa- 

 ration of, 461. 



Induction, on electro-dynamic, in 

 liquids, 265. 



Iron, on a new method of protecting, 

 from the action of the weather and 

 various corroding substances, 83. 



Jaffe (C.) on the supposed conversion 

 of ammonia into nitric acid in the 

 animal organism, 381. 



Jamin (J.) on the decomposition of 

 water by the pile, 298, 526. 



Jones (Dr. H. B.) on the acidity, 

 sweetness and strength of wine, 

 beer and spirits, 143. 



Kekule (Dr. A.) on a new series of 

 sulphui-etted acids, 518. 



Kinoue, on new sources of, 24. 



Kohlrausch (R.), theory of the electric 

 residue in the Leyden jar, 305, 4 1 2, 

 476. 



Lead, detection of gold in, 126. 



Lee (Dr. R.) on the nerves which 

 sup])ly the muscular structure of 

 the heart, 51. 



Le3den jar, on the electric residue in 

 the, 305, 412, 476. 



Liebig (Prof.) on the se|)aration of 

 nickel from cobalt, 461 ; on the 



