INDEX. 415 
T 
Tarout Shan Territory, account of a map of the, 71- 
Telescope, account of a new reflecting one, S23. — method of fitting 
up one, for allowing five persons to see through it at once, S27- 
Tesselite, analysis of, compared with that of Apophyllite^ 3. 
Thermometer, on its use in distillation, 214. 
Thermometer, geological, 376. 
Toad found alive in a stone, 188. 
Topaz, on the differences between the Brazilian and Saxon, 17* 
Trail, Rev. Dr, on the MSS. of Pappus, in the Advocates’ Library, 
Edinburgh, 219. 
Trap Bodes, on the columnar structure of, 64, 
Tidenag, or the white copper of China analysed, 69* 
U 
Ure, Dr, on soda alum, 389. 
Urine, black, described, 390. 
? 
Valleys, on the formation of, 151. 
Vaupher, M. on the fall of leaves, 243. — ^on the charagne of the lake 
of Geneva, 244. 
Vegetable Forms, on the laws observed in their distribution, 47. 
Vegetables in Madeira, on the distribution of, 187* 
Venus, Greenwich observations, as compared with the tables of Lin- 
denaii and Boiivard, 173. — on the visibility of, near the sun, 158, 
177. 
Vesta, right ascensions and declinations of, 176. 
Vesuvius, eruption of, I 9 I. 
Volcano of Eyafjeld Jokkul in Iceland, eruption of the, in Dec. 1821, 
155. 
Volcatioes in the moon, 1 75. 
W 
Water, crystallisation of, in rhombs, I 89 . 
Weaver, Mr, on the floetz formation, 39 1. 
Wernerian Natural History Society, proceedings of the, l65, 379'- — 
Memoirs of the, 194. 
Whirlwind at Roseneath, account of one, 331. 
Wieland, M., on artificial pastes, 370. 
Winter of 1821-2, in Russia and South America, compared, 385. 
Wollaston, Dr, on the finite extent of the atmosphere, 157 — on the 
separation of lime from magnesia, 306. note. 
Y 
Young, Rev. George, on the formation of valleys, bays and creeks, 151. 
Z 
Zeolite Family, on the chemical composition pf some minerals of 
the, 1 . 
Zoology, system of, by Dr Fleming, 397. 
