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tions corresponding to each face of a rhoinbicdodecahedron, 
the indentations observed upon the indistinct crystal faces 
of some individuals being caused by this peculiar laminated 
growth. The laminae vary from 0-0282 mm. to 0-1880 mm. 
in length, from 0-0188 mm. to 0-1504 mm. in width, and 
from 0 0031 mm. to 0‘0045 mm. in thickness. I have en- 
deavoured to give some idea of the appearance exhibited by 
these laminae when examined under the microscope in the 
drawing appended. 
GARNET LAMINiE FROM RAMSBOTTOM. 
The colour of the garnets (for such the crystals undoubt- 
edly are) is light rose-red, and coupling this with their 
transparency and chemical properties there can be no doubt 
that they are alumina-iron garnets, or almandine. On exa- 
mining some of the laminae under the microscope I observed 
that they contained enclosures, which were mostly fluid cavi- 
ties or “ gaspores,” also here and there cracks and rifts, filled 
with a white substance which most probably was calcite. On 
some of the laminae there was a separation out of a greenish 
mossy substance, which I believe to be ferric oxide, and on 
