448 J, D. Dana on Serpentine Pseudomorphs 
Among the specimens, one kind is a dark olive-green ser- 
pentine marked with pale bluish green spots a sixth to a fourth 
of an inch across. The spots have a darker green center, and 
hence look a little like concretions ; but some of them toward 
one side of the specimen are partly unaltered chondrodite, 
mineral which is now the dark green serpentine; and this 
other mineral may have been granular chlorite. The speci- 
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morphious character. The specimens are very similar to others 
from Amity, Orange Co., New York, in the cabinet of Profes- 
sor Brush. 
7, Pseudomorphs after Hornblende. | 
_._ The coarsely erystalline massive hornblende, of greenish- 
: black color, occurs altered to serpentine; part still showing 1ts | 
