446 SPECIAL 11ESULTS IN THE URANOLOGICAL 



lavas. These analogies are the more striking, because the 

 " metallic alloy of nickel and iron, which is constantly con- 

 tained in certain meteoric masses/' has not hitherto been 

 discovered in telluric minerals. The same distinguished 

 chemist of whose friendly communications I have availed 

 myself in the last few pages, has enlarged upon this subject 

 in a separate treatise ( 709 ), the results of which will be more 

 appropriately noticed in the geological portion of the 

 Cosmos. 



