76 Field Columbian Museum — Geology, Vol. III. 



3. MEDIUM OCTAHEDRITES. 



Width of lamella; 1.0-0.5 mm. More than one-third of the iron 

 meteorites belong to this class. They present, as a rule, quite uni- 

 form characters. The lamellar structure is, as a rule, well-defined, and 



Medium 



