436 Prof. Berzelius o« Meteoric Stones. 



So that there can be no doubt that this stone, in spite of the 

 difference of its external appearance, is but a meteorite which 

 in all probability had its origin in the same situation as other 

 meteoric stones. The carbon here occurs in the state of a com- 

 bination, which, when decomposed by heat, affords carbonic 

 acid, either by itself or accompanied by water, and leaves a 

 carbonaceous residue. In the first case the carbon is com- 

 bined only with oxygen, so as to form a body resembling mel- 

 litic acid, but in the latter it is in combination with oxygen 

 and hydrogen. However, there is no other substance known 

 which is not converted into carbon, carbonic acid, and water. 



It will be perceived by the preceding analyses that the results 

 of M. Berzelius differ a little from those of M. Thenard. 



17071 a7id Olivi7xe of Pallas. — This celebrated meteoric mass 

 which Pallas made known in Europe, was discovered lying on 

 the peak of a schistus mountain in Siberia, between Krasnojarsk 

 and Abekansk. Pallas estimated its weight at 1600 pounds : it 

 was chiefly composed of a skeleton of iron resembling a well- 

 risen loaf, the cavities of which are round and close to one an- 

 other; these are filled with the glassy and greenish olivine, 

 which has been already noticed. 



According to the analysis of M. Berzelius the iron of Pallas 

 freed from olivine by the hammer, is composed of 



Iron 88-042 



Nickel 10-732 



Cobalt '4.55 



Magnesium '050 



Manganese '1 32 



Tin and copper '066 



Carbon -043 



Sulphur a trace 



Insoluble residue '480 



100-000 

 This insoluble residue is an extremely interesting part of 

 the meteoric iron, it being precisely the same combination of 

 phosphorus and iron that M. Berzelius has already analysed 

 and described in his Researches on the Meteoric Iron of Bo- 

 humiliz ; it is composed of 



Iron 48-67 



Nickel 18-33 



Magnesium 9*66 



Phosphorus 18'47 



Loss 4-87 



100-00 



