384 Index, 



Physiognomy of the islands in the Pacific, by James D. Dana, 217. 



Polar lights, new theory of, by J. A. Broun, 179. 



Petrie, W., Esq., on the application of electricity and heat as mov- 

 ing powers, 66. 



Scoresby, William, D.D , on prismatic colours in dew-drops, 48. 



Schlagintweit, Hermann and Adolph, on the physical geography of 

 the Alps, 287. 



Smyth, C. P., Professor, his astronomical and meteorological no- 

 tices, 353. 



Silurian System of Bohemia, by M. Barrande, 107- 



Silliman, Dr B,, on the optical characters of American micas, 339. 



Sugar, detonating, account of, 185. 



Surgical operations without pain, 375. 



Stevenson, Robert, F.R.S.E.,C.E., &c., biographical sketch of, by 

 Alan Stevenson, C.E., 103. 



Snow line of the Himalayas, investigated by Captain Hutton, 93. 



Starvation, external symptoms of, as exhibited in famine districts in 

 Ireland, 184. 



Sorby, Henry Chfton, on the tetramorphism of carbon, 149. 



Syenite of Egypt, described by Professor Delesse, 260. 



Taylor, Hugh, Esq., on the chemical constitution of the rocks of the 

 coal formation, 140. 



Thunder of waterfalls explained, 370. 



Traces of an ethnic connection between the basin of the Ganges and 

 the Indian Archipelago before the advance of the Hindus into 

 India, 371. 



Uziglio, M., his analysis of the waters of the Mediterranean, 79. 



Valleys, origin of, 288. 



Voyage from Leith to Grenada, by P. Gillespie, 130. 



Vegetation, its probable effects on climate, 161. 



Zoological classification, observations on, by Professor Agassiz, 227. 



