ALLEGAN METEORITE AND MART IRON 



51 



and, finally, the composition of the entire sample examined is: 



Fe 



Cu 



Ni 



Co 



SiOj 



TiO, 



P2O5 



AI2O3 



Cr,03 



FeO 



FeS 



MnO 



NiO 



CaO 



MgO 



Na.O 

 Li,0 



rat 110° 

 ^^^ I above 110° 



2109 ^ 



.01 1 



1. 81 I 



34-95 1 

 .08 



• 27 

 2.55 



•53 

 8.47 

 5-05 



.18 

 trace 



1-73 

 21.99 



• 23 

 .66 

 faint trace 

 .06 

 •19 



Metallic part 23.06 percent. 



■ Stony part 76 94 percent. 



100. 



in 



Specific gravity 3.905. An average of two determinations 

 a picnometer flask at 27° C. by Dr. Merrill. 



THE MART IRON. 



HISTORY AND GENERAL FEATURES. 



The second meteorite to be described, wlriclr will be known 

 as the Mart Iron, was found early in 1898, on the farm of H. 

 T Vaughan, near Mart, in McLennan County, Texas. 



This iron weighed originally 15 V, pounds. From it a shce 

 welh ng 456 grLs was cut for the collection of the Nattonal 

 Mufeum the fron having been donated by the finder to the 

 museum of Baylor University, at Waco, T^as. For the prtv.- 

 lege of removing this slice we are mdebted to Mr O U 

 Charlton, Curator of the museum. The or.g.na shape J^he 

 u ;„ PI VT fifTs I and 2, was that of an irregu 



iron, as shown in rl. vi, ngs. i dii«a , , , , ,.,:tu 



,ar oval, somewhat flattened at one side and rounded above, .t 

 two large and deep pittings on the broader surface. The ong, 

 nal dimensions were about 8.5 by 15 by 25.5 cm. It was 



