II, Some Remarks on the Subterranean Course of Wa- 

 ter, and on the Absorption of Gases by Water in 

 the Interior of the Earth. By Gustav Bischof, 24G 



III. On Opal, and the Amorphisra of Solid Bodies. By 



Professor FucHS of Munich. . 263 



IV. Remarks on the Nature of the Evidence in support 



of a Theory of Light. By the Rev. Baden 

 Powell, M. A., F. R. S., Savilian Professor of 

 Geometry, Oxford, . 275 



V. Views in Ethnography, the Classification of Lan- 

 guages, the Progress of Civilization, and the Na- 

 tural History of Man. By Charles T. Beke, 

 Esq., F. S. A. . . 285 



VI. Report by MM. GeoflFroy St Hilaire and De Blain- 

 ville on the Zoological Results of the Travels of 

 M. Alcide d'Orbigny in South America, from 

 1826-1833, . . 296 



VII. Description of Drawing of Machinery for Regis- 

 tering the Variations of the Tide and Wind. By 

 Charles Atherton, Civil Engineer, . 311 



VIII. Description and Drawings of an Improved Method 

 of Making Screw Taps and Dies. By John Ro- 

 BisoN, Esq., Sec. R. S. E. and M. S. A. 317 



IX. On finding the Dew-point, &c., from the Cold in- 

 duced by the Evapoj-ation of Water. By H. 

 Meikle, Esq. . . 319 



X. Observations on the Liverpool and Manchester Rail- 

 way. By Mr David Stevenson, Edinburgh, 322 

 XI. On the Pitch-Lake of Trinidad, . 331 



XII. On the Structure of some Fossil Woods found in 

 the Island of Mull, Northern Africa, and on the 

 Karoo Ground to North-East of the Cape of Good 

 Hope. By William Nicol, Esq., . 335 



XIII. Ampere's Theory of the Formation of the Globe, 



and of the Phenomena of Volcanoes, . 339 



XIV. Instructions for the Expedition into Central Africa 



from the Cape of Good Hope, 23d June 1834; and 

 Account of the Distance it has already reached, 348 

 XV. Castle Toward, west coast of Scotland, Daily Meteo- 

 rological Register, from 1st October to 31st De- 

 cember 1834, . . 355 



