March, 1907. Iron Meteorites — Farrington. 



69 



acteristically in the hexahedrites in the form of rhabdite, and often c(jn- 

 stitutes I J^ to 3 per cent of their mass. Another characteristic mineral 

 of the hexahedrites is daubreelite. Graphite and troilite are rare, al- 

 though the latter mineral occurs in some members of the group in visible 

 nodules. The hexahedrites may be divided into normal and brecciated 

 hexahedrites, according to whether they are one or several individuals. 



A. NORMAL HEXAHEDRITES. 



In these hexahedrites the cleavage planes and Neumann lines run 

 without change of direction throughout the mass. 



IeXAHEDRI I'ES. 



