tJie Analyses ofM. Klaprofth, -csj 



sis, employed the pitch s.tone of Meissen, which is peilutii 

 and yellow, inclining to olive green. 

 A hundred parts of this fossil contain 



JSilex 



Alumine 



Liine 



Oxide of iron 



Oxide of manganese . 



Soda - - - 



Water 



Analysis of the Pmnice Stone of Lipari, 



Fixed alkalies, in consequence of their solubility, hafi 

 long escaped the researches of chemists in the analysis o£ 

 stones. But as they are now known to exist in a number 

 of fossils, they ought always to be supposed to exist when 

 a sensible decrease is experienced in their decomposition- 



This induced M.. Klaproth to repeat the analysis of the 

 pumice stone of Lipari, in which he had observed a loss ctf 

 three per cent. These parts he found again in the soda 

 and potash, which enter, as constituent parts, into the 

 composition of this fossih He obtained by nitric acid very 

 regular rhomboidal crystals of nitrate of soda; and, by the 

 addition of tartarcous acid, crystallized grains of acidulouf 

 turtrite of potash. 



A hundred parts of the pumice stone of Lipari are coej.- 

 posed of 



Silex « - - _ _ 77-50 



Alumina - - - - 17-50 



Oxide of iron containing a little 



manganese - - - - 1'75 



Soda and potash _ - _ 3 



99-75 



Analysis of the Zirconia of Norway. 

 The discovery of this foFsil, so valuable on account of 

 tli(^ eUnnentary earth it contains, is the more interesting to 

 imncralogists, as this is the first time it has been found in 

 its matrix. \\c are not yet acquainted with tltat of the 

 yirconia and hyacinth, which arc ftones of transportation.. 

 The gangui- from which it is extracted at Fricdrichswarn is 

 a fouipuuud of red fcld-spar and amphibolitc, in which ij. 



ii 



