U. S. NATIONAL MUSEUM 



PROCEEDINGS. VOL. 99 PLATE 21 



Fig. 1. — Slice of Linwood meteorite showing the well-developed octahedral pattern and the 

 distribution of the silicate inclusions, black because of the large quantity of carbon present. 

 One-half natural size. 



ft 



Fig. 2. — A light plessite field, the taenite lamella gray because of supersaturation with 

 respect to kamacite. Picral 85 seconds; X about iS. 



