408 Index. 



Predazzite, analysis of, 381. 



Protection from lightning, of houses with metallic roofs, 375. 



Puzzuoli, the subsidence of the land at, 385. 



Kain, acid, observation on, 374. 



Rolled blocks of rock resulting from glacier action, how distinguish- 

 ed from rolled blocks produced by the action of water, 208. 

 Russian America, its ethnography, by Dr Latham, 35. 



Sahara, desert of, 390. 



Sardinia, New map of 392. 



Saussure, Theodore, on his life and writings, by Professor Macaire, 



1. 

 Schimper, M. P., on the erratic phenomena of Scandinavia, 240; 



on fossil plants, 393. 

 Sensation at great heights, 373. 



Siberia, western, quadrupeds and birds peculiar to, 395. 

 Silliman, Benjamin, jun., on chemical composition of calcareous 



corals, 243. 

 Silver, iridescent, observations on, 396. 

 Snails, land, their boring power, 396. 

 Springs, wells, and rivers of India and Egypt, and of the table-lands 



between the tropics, their temperature, according to Captain 



Newbold, 99. 

 Statistical account of Scotland noticed, 400. 

 Storms, on the cause of, by G. A. Rowell, 281. 

 St Pierre as a naturalist, 209. 

 Sulphate of lead, converted into lead-glance, by means of organic 



substances, 382. 

 Temperature, high, in a pit sunk at Neuffen, in Wiirtemberg, 



384. 



Vanadium detected in an ore of iron, by Kersten, 382. 

 Vestiges of Creation, noticed, 399. 

 Volcanic dust, shower of, in Orkney, 217. 



Waves, the force of, in moving masses of rock, 378. 

 Well, burning, account of, 206. 

 Whale and shark fishing in Faroe, 210. 

 Winds, dry, their destroying effects on cliffs, by W. C. 

 Esq., 207. 



Yttro-Cerite, found in Orange County, New York, 383. 



Zircon, new locality of, in the Tyrol, 380. 



Zoological principles of classification, and of the determination of 

 fossils, 289. 



END OF VOLUME FORTY. 



