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FOSSILS.
SERIES I. TRIBE I. ORDER I.
Simple vitrifiable pellucid Foſſils.
Genus 1.—Gems.
Generic Character.
Untouched by Acids, giving Fire with Steel; hard, bright.
Species 1.—Diamond.
Specific Character.
An Octohædron of unequal Sides, impenetrable, colourleſs, pellucid.
Varieties
1. In Shape.
1[1]. Columnar Diamond.
A Column of fix Angles with two ſhort Pyramids.
2.—Squared Diamond.
A Column of four Angles, with truncated Ends.
3.—Pebble. Diamond.
Without Angles, rounded or irregular.
2. In Colour.
4[2]. Red Diamond.
Diamond coloured by Gold:
5.—Yellow Diamond.
Diamond coloured by Lead.
6.—Blue Diamond.
7.—Green Diamonds.
Diamonds, both coloured by Copper.
Variety of Variety.
8.—Purple Diamond.
Diamond coloured by Gold and Copper.
