jPg AMALYSES OF METEOl^IC STONES. 



The following are the proportions obtained from 10* 

 parts. 



Silcx • 50 



Lime 12 



Ahimine 9 



Oxide of i)OU 29 



Oxide of manganese I 



Oxide ofnii kel, a siiglit trace, scarcely 



to be estimated at '001 

 Sulphur, an atom 



10]. 



Muriaiic acid I" another examination of this stone pretty evident traces 



^uad in it. cf muriatic acid were found, 



PuTcrenees m These results diti'er a bttle from those obtained by Mr. 



t&e^two results. Moser : \bt, in exhibiting no magnesia ; 2dly, in containing 

 nickel ; 3dly, in a slig!it increase of weight, instead of loss j 

 an increase necessarily consequent to the oxidation of the 

 iron. This increase would have been still greater, if I could 

 have calculated the quantity of sulphur disengaged by mean* 

 of the hidrogen, 



'Di'Jers fr&m This aerolite then is of a different species from those that 



ptier aerolites, j^y^yg hitherto been analysed, since it contains neither mag-» 

 nesia, nor chrome, gubstances constantly found in the 

 other aerolites ; and in con'aining a considerable quantity 

 ©f alumine, traces of which alone have been found in 

 others, 



xe-~ certainly ^^^ ^^^'^ Moravian aerolite has all the external characters, 



«»«• that distinguish productions of this sort; and from the ac- 



count given me it appears unquestionable, that it fell fronj 

 the atmosphere. 



Ex;-<*ence of Note. It appears from a former paper in the Annales de 

 aiieteftvicBtones Chimie, vol, LXIX, p. 280, that the Institute had enter- 

 <«4.jiOie<Jj tained some doubts of the reality of the existence of alu- 



mine in meteoric stones, announced by Mr. Sage ; see 

 Jouruid, vol. XXIV, p. 190 ; because it had not occurred 

 in the stones analysed by others, Mr. Vauquelin accord- 

 ingly analysed a stone, that had fallen no long time before 

 :t«ar Parma, but " could not discover in it at most above 

 p 0015 of alumine.'" lie would willingly have analysed a, 



specimea 



