I N D E X. 



5o; 



niversary of the Geological Society, 308, 

 388 ; mineral veins, 394 ; proofs of mo- 

 dern elevation and subsidence, 397 j or- 

 ganic remains, 402 ; on hills of gravel 

 containing marine shells, 471 ; geology 

 of the 'I'hracian Bosphorus, 47'? ; on 

 some impressions in sandstone, 474 ; si- 

 Jicified trunks of tree.s in new red sand- 

 stone, 475 ; petrified piece of wood from 

 a Roman aqueduct, 476 ; raised beach 

 in Barnstaple bay, 477. 



Gilks (Wm.) on the aurora borealis, Oct. 

 II, 77. 



Glass-enamel, 444. 



Glass- pain ting, 443. 



Gould (J.) descriptions of various birds, 

 287, 290, 293, 295. 



Graham ( Prof. ) on the constitution of salts, 

 216. 



Graves (J. T. ) on the symmetrizing power 

 of the eye, 370. 



Hall ( Dr. M. ) on the reflex function of 

 the spinal marrow, 51, 124, 187, 378. 



Hamilton (W. J.) on the geology of the 

 Thracian Bosphorus, 473. 



Hawfinch, 72. 



Heat, in uncrystallized media, transmission 

 of, 336; physical causes of the pheno- 

 mena of, 342. 



Heineken (N. S.) on an anchor found at 

 Sealon, 10; on the aurora borealis of 

 Feb. 18, 265. 



Helm wind, on the, 221. 



Henry ( Dr. W.), notice of, 152. 



Herschel, (Sir J. F. W.), the Royal medal 

 awarded to, 213. 



HoflTman (Prof.), notice of, 308. 



Holditch (Rev. H.) on a property of the 

 parabola, 35. 



Hopkins's researches in physical geology, 

 remarks on, 14. 



Horner (L.) on an artificial substance re- 

 sembling shell. 201. 



Horsburgh (Capt), notice of, 149. 



Hydrate of magnesia, on, 454. 



Hydrogen, antimoniuretted, 343. 



Hymenium of fungi, 492. 



Hymenopterous insects, new, 440. 



Imperial standard troy pound, 63. 



Indigo, analysis of, 324 ; analogy of alco- 

 hol and indigo, in their combination with 

 sulphuric acid, 324. 



Infinite series, formulae for the summation 

 of, 121. 



Infusoria, fossil, used for food, 318, 



Insects, voluntary sounds of, 327. 



Integral calculus, 210. 



Interference of light, experiment on the, 

 364. 



Intestinal worm, double-bodied, 253. 



Inulin, how obtained, 249. 



lodal, a nevv compound, 321. 



Iodic acid, action of voltaic electricity on, 

 93. 



I«dine, protochloride and terchloride of, 



430 ; preparation of, 498 ; its action on 



the vegetable alkalis, 500; iodine and 



strychnia, 501. 

 Iron, peculiar voltaic condition of, 13S, 



172, 175, 267, 276, 425. 42S. 

 Iron pyrites, crystallized, artificial, 158, 

 Jamesonite, analysis of, 237. 

 Johnston (J. F. W.) on baryto-calcite, 373, 

 Jussieu (MM.) notice of, 152, 470. 

 Kane (Dr.) on pyroxylic spirit, 45, 116; on 



the composition of thebaine, 387 ; on the 



protochloride and terchloride of iodine, 



430. 

 Keith (Rev. P.) on the classification of ve- 



getablts, 37, 108. 

 Kelland (P.) on the transmission of light 



and heat in uncrystallized media, 336. 

 Kiernan (F.). Copley medal awarded to, 



212. ' 



Kinkajou, notice of the, 291. 

 Knight (T. A.) on the absorbent powers 



of the roots of trees, &c., 488. 

 Koala, anatomy of the, 481. 

 Koba and Kob of Buffbn, 303. 

 Lassaigne (M) on the compound of albu- 

 men and bichloride of mercury, 420. 

 Latham (Dr.), notice of, 467. 

 Leach (Dr.), notice of, 151, 467. 

 Lead, peroxide of, voltaic condition of iron 



as excited by, 425, 428. 

 Leveille (M.) on the hymenium of fungi, 



492. 

 Liebig (M.) on an aetherial oil of wine, 417. 

 Light, new dioptric, 176; on the disper- 

 sion of, 221; experiment on the inter- 

 ference of, 364 ; transmission of, in un- 



crystalized media, 336, 385. 

 Lime, carbonate of, its decomposition by 



heat, 496. 

 Linnaean Society, 71, 223, 464. 

 Littrow (Prof.) on the projection of maps 



and charts, 229 ; construction of the 



hour-lines of sun dials, 229. 

 Lloyd (Prof.) on the propagation of light 



in uncrystallized media, 385. 

 Lubbock (J. W.) on the tides, 381. 

 Lyell's(C.)address to the Geological Society 



at the anniversary, Feb. 17, 308, 388. 

 MacCullagh (J.) on the laws of crystalline 



reflexion, 42 ; on the laws of reflexion 



from metals, 382. 

 MacGauley's (J. W.) reply to Dr. Ritchie, 



130. 

 Macvicar ( Rev. J. G.) on the symmetrizing 



power of the eye, 234. 

 Magnesia, hydrate of, 454, 

 Magnet, permanent, on the electric shock 



and spark from, 280. 

 Magneto-electrical machines, 12, 65. 

 Maize, fossil, 323. 

 Mallet (R.) on the aurora borealis of Sept. 



29, 75. 

 Man, physical development of, 197. 

 Manganese ore containing silver, 279. 

 Manna of Mount Sinai, 226. 



