U. S. NATIONAL MUSEUM 



PROCEEDINGS. VOL. 99 PLATE 24 



Fig. 1. — Irregular edge of an inclusion. The silicate at one point extends in a streamer 

 from the mass. Three small isolated particles of silicate in kamacite. Picral 30 sec- 

 onds; X about 45. 



Fig. 2. — An area at the edge of the slice showing, at lower left, a zone of alltration in 

 which the normal structure has been replaced by a secondary granulation. The dark 

 area at lower right is probabh' Indroxide; that at upper left is silicate. Picral 120 

 seconds; X about 30. 



