INDEX. 435 
Skull of a Greek compared with that of a Cannibal, 212. 
Skulls, human, fossil ones found in Germany, 422. 
Snow, red, found to be a fungus, 423. 
Sound, velocity of, 203. 
Specific Jieat, new discoveries respecting, 415. 
Sphinx in Egypt, recent discoveries concerning, 88. 
Springs, hot, of Trinchera, 424. 
Stars, fixed distance of, 201. 
Stars, fixed, catalogue of thirty-six principal ones, 321. 
Steam engine, account of a new revolving one, 348. 
Strychnine, a new vegetable alkali, 210. 
Sulphate of potash, structure of, 6. 
Sulzer’s galvanic experiment in 1767, 414. 
Swainson, Mr, sketch of his journey in Brazil, 369* 
Swallow, singular fact respecting the, 421. 
Syphon, new retaining, 204. 
T 
Tahasheer, singular optical property of, 147. 
Tate, David Gilbert, a boy born deaf and blind, notice concern- 
ing, 171 . 
Thebes, excursion to, with an account of the antiquities recently 
discovered in, 33. 
Thenard, M. on oxygenated water, 208. 
Tides of the Mediterranean, 236. 
Tough, Reverend G. on a new orrery, 410. 
Tourmaline, pyro-electricity of, 205. 
Traill, Dr, on a new mineral called Barystrontianite, 380. 
Trap- veins, description of, 145. 
Trinchera, hot springs of, 424. 
Troughton, Mr, on the length of the seconds pendulum, as determin- 
ed by Mr Whitehurst and Captain Kater, 75.— nautical top, de- 
scription of, 105. 
Tytler, Mr Fraser notice of, respecting the journey of Mr J. B, 
Fraser to the, sources of the Jumna and the Ganges, 127* 
V. 
Valetta, position of, determined, 280. 
Variation, diurnal, of the needle, 207* and 403. 
of the needle at different places, 207. 
Veins which connect mineral beds, 1 44. — trap- veins, 145. 
Vision, on a singular affection of, 273. 
Volcano, submarine, near Shetland, 212. 
W 
Wacke, description of, 138. 
Wallace, Professor, on the application of the indeterminate analysis 
to the elimination of the unknown quantities from two equa- 
tions, 29. — on the use of asbestus fibres for micrometers, 202. 
Wallich, Dr, on the progress of botany in Bengal, 376. 
