Index. 387 



Insects, on the classification of, by Professor Louis Agassiz, 101* 

 Indigo, Dr Penny, on the valuation of, 285 

 Iron, native, 183. 



James, Captain, R.E., meteorological observations by, 282. 



Kjerulf, Theodor, on a variety of quartziferous trachyte, 367. 

 Leprosy, Arabs exempt from, 188. 



Macgillivray, the late WiUiam, Regius Professor of Natural History, 



Aberdeen, biographical account of, 189. 

 Marchand, M. Eugene, on the analyses of snow and rain water, 179. 

 Metereological observations, 144. 



Miller, John Fletcher, Esq., meteorological observations by, 46. 

 Minerals, paragenetic relations of, 323. 

 Murchison, Sir R. I., on the basin-like form of Africa, 52. 



Nasmyth, James, Esq., some remarks by, on the probable present 

 condition of the planets Jupiter and Saturn, in reference to 

 temperature, 341. 



Negroes of the Indian Archipelago, noticed by J. W. Crawfurd, 175. 



Nostoc, remarks on, 383. 



Obituary of Leopold von Buch, 369. 



Oken, Professor, on popular assemblies for the advancement of 



science, 112. 

 Ordnance Survey, astronomical observations on, 350. 



Patent law amendment act, 384. 



Penny, Dr Frederick, on the valuation of indigo, 285. 



Petermann, Augustus, Esq., on the distribution of animals available 



as food in the Arctic Regions, 295. 

 Platinum and Iridosmine in California, 182. 



Rangoon, meteorological register of, 377. 



Reservoirs, application of, to the improvement of rivers, 118. 



Rocks, solidification of, in the Florida Reefs, and the sources of lime 



in the growth of corals, 56. 

 Rose, Professor H., his biography of Berzelius, 1. 

 Rowell, Mr G. A., on the change of temperature in Europe, and 



the variation of the mao-netic needle, 312. 



