1848.] Meteoric Iron from the Kurruckjpore hills. 541 



yellow sandstone-looking miner- 

 al when digested in muriatic acid 

 loses its colour, and the acid gives 

 traces of iron. The mineral is 

 then a compact dead white-co- 

 loured mass, like milk-quartz, and 

 before the blowpipe it proves to be 

 quartz without any trace of alumina 

 or magnesia. 



The lower or foot part of the 

 specimen is much more corroded 

 than the upper part (as if it had 

 oxidated more rapidly by lying on 

 the damp ground?) In some of 

 the cavities a lining of a pitchy 

 lustre is to be detected, but this 

 does not appear to be the remains 

 of nests of crystals, as in the Bra- 

 zilian and Siberian specimens. 



Our mass having laid apparently 

 in an exposed situation in a bun- 

 galow, has yet many specks of 

 white-wash upon it, which will not 

 scrub off, and as to use an acid 

 would I fear alter the fair appear- 

 ance of the specimen, I have thus 

 preferred to allow them to remain. 



II. — Dimensions^ Weight , fyc. 



The dimensions of this mass of 

 iron taken with callipers, are as 

 follows : 



Inches. 



Extreme length, 15 



Extreme breadth, 12f 



Greatest thickness from the 



foot to the bosses at the 



vertex, 9j 



Average thickness, exclud- 

 ing the foot, about 8f 



Thickness at the small end, 5|- 

 Breadth at the small end, . . 7f 

 Diameter of the foot, which 



is somewhat circular, .... 7f 

 Diameter of the foot at the 



base, 6 



Foot projects from the lower 



part about If 



4 b 2 



