INDEX. 



. fotmd in CornTvall, containing free 

 muriatic acid, and muriates of soda, 

 lime, alumihe, magnesia, and manga- 

 nese, 180. ' 

 Grotfhuss, M. on the influence of gal- 

 vanic electricity in metallic arboriza- 

 tions, 112 

 Gum resins, analysis of, 228, 3^4 

 Guyton, M. on the increase4 weight ob- 

 tained by iron, on being exposed to 

 the action of the air and heat, 188 

 H. 

 Hall, Marshall, Esq. on the classifica- 



tion of chemical agents, 59 

 IJardy, C. Le, Esq. on the culture of 

 parsneps, and their utility in feeding 

 cattle, 37 

 Hassenfratz, M. on the oxides of iron, 



and their nature, 184, '266 

 Haussmann, M. on the strata of the pri- 

 mitive mountains of Norway and 

 Sweden, 384 

 Hidrogen gas, carburetted, 3nd oxi- 



carburetted, experiments on, S21. 



See Gaseous compounds 

 Hornblende among the volcanic pro- 

 ducts of Cape de Gattes described and 

 analyzed, 75 

 Humboldt, M. his theory of strata, con- 

 firmed by the appearance of those in 

 the primitive mountains of Norway 

 and Svieden, 384 

 Hume, Mr. on military rockets, and his 

 claims to priority of suggestion rela- 

 tive to their improvement, -€3.— 

 Replied to, 161 

 I. 

 |bbetson, Mrs. on Jussieu's method of 

 botany, 98— On grafts, 103— On the 

 corollas of flowers, with various dis- 

 sections to discover the source of their 

 tints, 170 — On the interior of plants, 

 254 »■■■•: 



Iceland, hot springsand mineralogy of,78 

 'inqum<;s concerning some chemical 

 terms and phrases, 81 



Iron oxides, chemical Importance of a 

 Icnowledge of, and different opinions 

 fcspecting, 184— Principal methods 



employed for obtalninoj oxiHes of irott, 

 187— Experimentr, 138, 266— Gene- 

 ral conclusions respecting the propor- 

 tions of oxigen and trort contained in 

 the different oxides, 272 — Diiferenoe 

 between the native oxides of Aost 

 and Elba, 274 



J. 

 Jameson, Professor, on the mineralogy 



of the Valley of Pentland, 379 

 Jerusalem artichokes, prize for the cul- 

 ture of, as food for Merino sheep, 380 

 Jussieu's botannical method, a mistaka 



in, 101 

 Justus on the nature of the new metal^ 

 potassium and sodium, in answer to 

 Mr. Dalton, 67 — Reply to, by Mr. 

 D. 157 — His answer and further re- 

 marks, 219 



K. 

 Klaproth, M. his analysis of gray cop- 

 per ore, compared with the analysis 

 of the ore of Airthrey, 30 

 Knight, Thomas, Esq. on capillary ac • 

 tion, with remarks on, and objections 

 to, Laplace's theory, 155— on the parts 

 of treesprimariiy impaired by age, 275 

 L. 

 Lands newly discovered in the Frozea 



Ocean, 381 

 Laugier, M. Ofj the analysis of the am- 

 phibole of Cape de Gattes, in the 

 kingdom of Granada, 75 — His com- 

 parative examination of the mucous 

 acid formed by the action of nitric 

 acid on gums, and on sugar of milk, 14 

 Lavoisier, M. on the power of heat to 



increa.se the weight of iron, 188 

 Lectures on the history and practice of 



electricity, 159 

 Lizards, respiration of, S61 

 L. O. C. on a cheap and simple con- 

 struction of an air pump, 249 — On 

 centrifugal motion, 264 

 Lime, its action on urine, 1S1«— fluate 



of, see Spar 

 Luc, De, He De Luc 

 Luminous appearance of the sea, how 

 produced, 53— (See Animals 



Lyall, 



