INDEX. 403 



Idocrase discovered in the Island of Skye, 367 

 Infusoria, phosphate of lime in the teeth, and silica in the skin, of, 

 400. 



Jardine, Sir W., his observations on the salmonidae, 46. 

 Johnston, James F. W., on the chemical composition of the crys- 

 tallized oxychloride of antimony, 41. 



Lake, on the Pitch, of Trinidad, 331. 



Languages, classification of, &c., 285. 



Lethaea Geognostica, by Dr Bronn, noticed, 882. 



Life, human, on the probability of, in Glasgow, 378. 



Light, remarks on the nature of the evidence of a theory of, 275. 



Limnoria terebrans and Teredo navalis, on the, as at present exist- 

 ing in certain localities on the coasts of the British Islands, 

 121. 



Lyell, Mr, award of the royal medal for geology and mineralogy 

 to, 364. 



Machinery, description of drawing of, for registering the variations 

 of the tide and wind, 311. 



Macnab and Co.'s exposition of the principles of Mr James Lang's 

 invention for spinning hemp, &c. noticed, 380. 



Man, natural history of, 285. 



Mantell, Dr, award of the Wollaston medal to him for his disco- 

 veries in geology, 364. 



Matter, on the quantity of solid, suspended in the water of the 

 Rhine, 102. 



Meteorological observations made at Castle Toward, 355 ; at Kin- 

 fauns Castle, 357 ; at Edinburgh, 358. 



Moon, its influence on the weather, 358. 



Museum of Royal College of Surgeons, Ireland, descriptive cata- 

 logue of the preparations in the anatomical department of, no- 

 ticed, 370. 



Nees, Prof. Ch. G., his new genera of Indian grasses, 180. 

 Needle ore, 366. 



Nicol, William, his observations on fossil wood from Island of Mull, 

 Egypt, and Southern Africa, 335. 



Observations, meteorological, made at Castle Toward, in Argyll- 

 shire, 144; Kinfauns, 357; Edinburgh, 358. 



Opal, on, 263. 



Opium, use of, 374. 



Orbigny, M. Alcide d', report of the zoological results of the tra- 

 vels of, in South America, from 1826-1833, 296. 



Oyster-shells, chemical com{)osition of, 374. 



Pitch Lake of Trinidad, on the, 331. 



Platina and gold of the Uralian mountains, 366, 



