234 Miscellaneous Intelligence. 



bonate of lime, silica, and traces of carbonate of magnesia, and 

 oxide of iron. — Aiinales de Chimie, xxxvi. p. 289. 



Our readers will see an account of the presence of potash in a 

 mineral water in the xviith vol. of the Quarterly Journal, p. 178, that 

 water being from Cheltenham. 



11. Floating Volcanic Products. — From the Journal du Havre, 

 July 20, 1 827 ; — Capt. le Sauvage, of the Bonne Emma, came in yes- 

 terday from Senegal, and says, that on the 29tli June, 1827, being 

 about 20 leagues to the east of the Azores, he traversed a space 

 three leagues in width, covered with volcanic stones, sugar canes, 

 straw, and pieces of wood. He supposed these debris had been 

 caused by the eruption of a volcano. — Annates de Chimie, xxxvi. 418. 



12. Large Masses of Native Ptatina. — One by Humboldt, from 

 Peru, now in the Berlin Museum ; weight 1083 grains. Another 

 from America, in 1822, weighing 11640 grains, now in the 

 Madrid Museum. A third, a few months since from the Uralian 

 mountains, deposited in the Museum at St. Petersburgh, weigh- 

 ing 10|| Russian pounds, or above eighty- one thousand grains, — 

 Jatneson's Journal. 



13. Platina Sand of Russia. — Professor Breithaupt, who has ex- 

 amined the Russian metalliferous sand washed out of the sand of 

 Nijnotaguilsk, in the government of Perme, in Siberia, describes it 

 as being of two kinds. The purest and most quartzose affords prin- 

 cipally fine wash gold, the other is ferriferous, and is that which 

 contains the platina. The latter was found, upon mere inspection, 

 to consist of very different matters, and the following substances 

 were in this way separated, i. platina of two kinds, the one like that 

 from America, the other of a dark grayish colour, magnetic, and 

 containing a considerable proportion of iron; ii. gold; iii. the native 

 alloy of iridium and osmium ; iv. flat silvery white grains of palla- 

 dium ; V. iserineor magnetic iron sand. 



The grains of this sand were very sharp-edged, and even bristled 

 with points in some places, from which it would appear that they 

 could not have rolled far, and must have been found at no great 

 distance from their origin. 



