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3. On the Resemblances which Microscopic Objects in Dichroite and Amethyst have to some of the lower forms of Organic Life

Published online by Cambridge University Press:  15 September 2014

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Extract

When examining with the one inch object-glass of a compound microscope some pieces of Strathpeffer Albert coal, I happened to place on the stage a crystal of dichroite, and was surprised to observe its surface covered with circular impressions. Their resemblance to some which I had previously noticed on iron pyrites associated with Albertite, led to a further inspection, which showed that they were due to globular bodies of various colours distributed throughout the crystal in layers parallel to the respective faces.

Type
Proceedings 1872-73
Copyright
Copyright © Royal Society of Edinburgh 1875

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