3G8 PROCEEDINGS OF THE ACADEMY OP [1886. 



form for 1 mm. ; the other is 15 mm. from the right edge and 8 or 

 9 mm. below the border, about 12 mm. long, on both ends 1-5 mm. 

 and in the centre about 1 mm. wide. This iron is brighter than 

 any other portion of the edged surface and has a slight!}^ yellow- 

 ish hue. The patches are not perfectly smooth, however, but 

 show many very minute depressions. In the centre where this 

 iron is narrowest and on some portion of the unetched surface of 

 my slab, small spots of rust have made their appearance. An 

 examination proved the presence of considerable quantity of 

 chlorine, from which it is evident that they are the result of the 

 oxidation of ferrous chloride, which this meteorite contains in 

 small quantities. 



The so-called " alteration zone " next to the hrandrind is quite 

 distinct and from 1 to 1'5 mm. in width. 



I have made three analyses of this meteoric iron, the first nearly 

 twenty j^ears ago, of the slightly rusty fragment, sent by Dr. Lea 

 (1), the second of a perfectly fresh fragment of that portion cut 

 off for specimens (2), and the third of the carefully purified saw- 

 dust obtained by this operation, which represents the average 

 composition of the whole mass where it was cut (3). 



They gave the following results : 



1. 2. 3. 



Specific gravity = T"521 



Iron = 88-92 89-940 89.93 



Copper = 0-28 0-080 0-06 



Nickel = 9-82 8-507 8-06 



Cobalt = 0-77 0-690 0-56 



Phosphorus = 0-19 0-109 0-66 



Sulphur = not det'd. 0-006 not det'd. 



99-93 99-332 99*27 



