412 Index. 



Eain, quantity of, in Cumberland from the 1st July 1844 to the 



30th June 1845, 345. 

 Kain drops, temperature of, 389. 

 Rain, phosphorescent, 180. 

 Ruthenium, a new metal, 199. 

 Rocks said to be older than the oldest fossiliferous deposits, Lyell 



on, 341. 



Scheerer on the microscopic examination of sunstone and other mine- 

 rals, 195. 



Seller, Wm., M.D., examination of the views adopted by Liebig on 

 the nutrition of plants, 50. 



Silicates of Yttria and pi-otoxide of Cerium in the Saxon Erzgebirge, 

 198. 



Silver, chloride and bromide of, discovered in ancient coins, 199. 



Sismondine, a new mineral species, 193. 



Snow-line, height of, in India, 390. 



Spadaite, a new mineral species, 194. 



Springs, observations on, by Baron Alex. Humboldt, 277. 



Sulphate of soda, its economical extraction from sea-water, 200. 



Sulpho-Arseniuret of lead, a new mineral species, 194. 



Sunstone. 195. 



Tenorite, a new mineral species, 196. 

 Thomjiite, a new mineral species, 196. 



Trade-Winds, observations on, by Assistant-Surgeon Robert Law- 

 son, 132. 

 Tschewkinite, a new mineral species, 197. 



Vanadium-Bronzite, 197. 



Veins, quartzose and metalliferous, their origin considered, by Pro- 

 fessor Bischof, 125. 

 Volcanoes, account of, by Baron Humboldt, 277. 



Whale, Rock-nose, account of, by Mr A. H. Guerin, 266. 



Xanthokone, a mineral resembling Greenockite, 197. 



Yttro-Titanite, a new mineral species, 198. 



END OP VOLUME THIKTY-NINE. 



