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Genus. Species.
Variety
Tripelas,
In their Aſcent to Boles, aſſume the following Names and Characters.
1. White Tripela—-The Creta Argentaria of the Antients.
| This takes in | Ochre, and becomes, |
| The Common Tripela, or Gleba Alanar. | |
| blue Clay, and becomes, | |
| The Terra Melia of Dioſcorides. | |
| Spar, and becomes, | |
| Hard Chalk, |
2. Brown Tripela—called Rotten Stone.
| This takes in | Spar, | and becomes, |
| The French Rotten Stone. | ||
| Talc, | and becomes, | |
| The Wiltshire Rotten Stone. |
3. Red Tripela.
| This takes in Talc, | and becomes, |
| Laminated Tripela. |
Boles,
