4,16 ^^- INDEX. 



Tides on the rirer Thames, Mr Barlow's observations regarding the, 49. 



Tit-lark caught at sea, 393. 



Tour to the south of France and the Pyrenees, Mr Arnott's, 241. 



Treschsell,' M. his remarks on coloured shadows, 32. 



Trevelyan, W. C. Esq. his remarks on the marine cockles found in York' 



shire, at a distance from the sea, 367. 

 Tumbull, Alexander, Esq. his notice respecting the geological structure 



of the country around Darwar, 194. 



Vegetation, account of its establishment at the surface of the globe, 64. 



Venerupis nucleus, description of, 371. 



Vultur aura, Mr Audubon's account of the habits of, 172. 



Vulture shot in Somersetshire, 206. 



Water fresh, found in the sea far from land, 369. 



Water-spouts in the Irish Channel, 192. 



Wernerian Natural History Society, proceedings of the, 1 91, 389. 



Winds in the polar regions, 193, 



Witham, H. Esq. his remarks on the lead mines of Spain, 375. 



Wohler, F. his description and analysis of pyrochlore, 341. 



Zinkenite, M. H. Rose's account of its chemical composition, 341. 



Zoology, notices in, 202, 393. 



Zschokke, M. his remarks on coloured shadows, 32. 



P. Neili-, Printer. 



