426 ixDmx. 



H 



Hammers (mineralogical), observations on the forms of, 1-10 



Hartshorn, use of, in intoxication, 407 



Hastings (Dr.), observations of, on the effect of dividing the 

 eighth pair of nerves, 45-63 — reply thereto, 320-327 



Heinrichs (M.), experiments and observations of, on phospho- 

 rescence, 399-401 



Henry (Dr.), analysis by, of native carbonate of magnesia, 387, 

 388 — correspondence of Dr. Ure with, 402 



Himcilaya, observations on the height of the White Mountain of, 

 240-247 



Hop, an analysis of the active principle of, 205 



Houses, observations on the best mode of vcarming and venti- 

 lating, 229-240 



Hyoscyamia, analysis of, 205 



Indian corn, analysis of, 206-208 



Intelligetice, (miscellaneous) in mechanical science, 199, 200, 



381-385 — in chemical science, 201, 385 — in natural history, 



216, 404— in general literature, ^c. 223, 411 

 Intoxication, antidote to, 407 

 Iodine, its application as a medicine, 407 

 Iron, chromate of, discovered in the island of Unst, 222 — fail 



of an iron bridge, in America, 385 — Permeability of iron to 



tin, ibid. 

 Ives, (Dr. A. W.), analysis of Lupulin, 205, 206 

 Jasper, general observations on, 63-70 — synopsis of its varieties, 



70-72 



K 



Klaproth, (Martin Henry), on the chemical analysis of mineral 

 substances, 272 — analysis of electrum, 272 — of the pacos, or 

 red silver ore of Peru, 273 — of the hepatic mercurial ore from 

 Idria, 274 — of the lamellar red copper ore from Siberia, 276 

 — of the fibrous blue copper ore of Siberia, 277 — of a green 

 copper ore from Siberia, 278 — of the copper glance from 

 Siberia, 271 



Konilite, a new mineral, notice of, 218 



Lamp, description of a new sinumbral one, 290 — improvement 

 of oil lamps, 381 — account of coal-oil parish lamps, ibid. 

 382 



