450 J. D. Dana on Serpentine Pseudomorphs 
the sections are generally very exactly rectangular; but some 
of them have various oblique angles, as shown in figs. 11d, ¢, 
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is represented enlarged ten times (like fig, 8) in fig. 9. The 
edges are rectangular. The upper surface, or that parallel to 
a half; but generally they are placed at all angles toward one 
another, and some ¢ 
--s Massive serpentine. 
