INDEX. 



48S 



Frltzche (M.) on a new compound of 



sulphate of magnesia and water, 31 .'}. 



Prodsham (W. J.) on the vibration of 



of the pendulum, 463. 

 Fuchs (M.) on preparing lithia, 393. 



Galvanism, on M. Fechner's view of 

 the theory of, 161 ; justification of 

 the contact theory of, 205, 367 ; Prof. 

 Jacobi on the galvanic spark, 401. 



Gases, on the specific heats of the, 261, 

 339; specific inductive capacity of, 

 424. 



Gassiot (J. P.) on a new heating effect 

 of a constant battery, 436. 



Geological Society, 225, 299, 386. 



Geology: — 'Plesiosaurus macrocephalus, 

 225 ; on the Silurian rocks of Aber- 

 gele, 225 ; fossils, 226 ; on the Weal- 

 den strata at Linksfield, 226 ; origin 

 of the limestones of Devonshire, 228 ; 

 fossil stem of a tree, 229 ; distribution 

 of organic remains in the oolitic se- 

 ries of Yorkshire, 229 ; state of ani- 

 myl matter found in fossils, 231 ; 

 Prof Sedgwick on the English stra- 

 tified rocks inferior to the old i-ed 

 sandstone, 299 ; on spirolinites in 

 chalk, 386; quicksilver of San Ono- 

 fre, 386 ; obsidian from Real del 

 Monte, 387; Oar's rock, 317; fossil 

 fish of the Bagshot sands, 387; fossil 

 wing of a neuropterous insect, 388 ; 

 on some species of Orthocerata, 388. 



Geometrical equivalents for engineer- 

 ing, scale of, 32. 



forms of turbinated and 



discoid shells, 464. 



Girardine (M.), reagent for the detec- 

 tion of sulphurous acid in the hydro- 

 chloric acid of commerce, 392. 



Glass, specific inductive capacity of, 41 9. 



Gluten in grain, on the proportions of, 

 315. 



Gold, cyanide of, 318. 



Graham (Prof. T.) on the constitution 

 of salts, 219. 



Grain, on the proportions of gluten in, 

 315. 



Graves (J. T.) on a new and general 

 solution of cubic equations, 217. 



Gregory (D. F.) on Mr. Waldie's expe- 

 riments on combustion and flame, 424. 



Griffin (J. J.), arithmetical analysis of 

 mixed salts of potassium and sodium, 

 132; instructions for the qualitative 

 analysis of soluble salts, 202. 



Groombridge's Catalogue, errors in the 

 nomenclature of certain stars in, 233. 



Grove (W. R.) on a new voltaic com- 

 bination, 430. 



GulliVer (G.), researches on suppura- 

 tion, 193. 



Guyaquillite, a new composition of or- 

 ganic origin, 329. 



Hare (Dr.) on the reaction of the es- 

 sential oils with sulphurous acid, 

 28. 



Heat, on the unequally polarizable na- 

 ture of, 97; depolarization of, 106; 

 on the refrangibility of, 180. 



Hemerobioides giganteus, a fossil in- 

 sect, 388. 



Herschel (Sir J. F. W.), festival in com- 

 memoration of his return from South- 

 ern Africa, 75. 



Hilton (J.) on the decussation of fibres 

 at the junction of the medulla spinalis 

 with the medulla oblongata, 456. 



Hogg (J.) on the action of light upon 

 the colour of the river Sponge, 457. 



Holtzapffel (C.) on a scale of geometri- 

 cal equivalents for engineering and 

 other purposes, 32. 



Hydrochloric acid, reagent for the de- 

 tection of sulphitroiis acid in, 392. 



Hydrofluoric acid, decomposition of sili- 

 ceous minerals by, 473. 



Hydrogen, arseniuretted, preparation of, 

 3»5. 



Iodide of amidin, on, 312. 



Iodine in kelp, on, 468. 



Iodine, iodide of potassium, and the es- 

 sential oil of cinnamon, 113. 



Iron, on the cause of the peculiar con- 

 dition of, 257; meteoric, 350. 



Ivory (J.) on the equilibrium of a ho- 

 mogeneous planet in a fluid state, 

 81 ; on the theory of astronomical re- 

 fractions, 147; remark on an article 

 by M. Poisson, 274 ; on Clairaut's 

 principle for determining the figure 

 of equilibrium of a fluid, &c., 321. 



Jackson (C. T.) on the chemical analysis 

 of meteoric iron from Claiborne, Ala- 

 bama, 350. 



Jacobi (Prof) on the galvanic spark, 

 401. 



Johnston (Prof. J. F. W.) on the com- 

 position of elastic bitumen, 22; on 

 the separation of the oxalic from 

 other organic acids, 26; on a new 

 compound of sulphate of lime with 

 water, 325 ; on crystalline forms and 

 chemical formulas, 405 ; on the ana- 

 lysis of the resins, 474. 



Kane (Prof) on the ammoniacal and 

 2 12 



