This page has been validated.
viii
EXPLANATION OF PLATES.
| No. | 8. | Octahedron with laminze of superposition on each face, passing into spheroidal. |
| 9. | The same form with smooth faces. | |
| 10. | The spheroidal elongated. | |
| 11. | The cube with beveled planes on the edges. | |
| 12. | Octahedron macled, or hemitrope. | |
| 13. | Rounded dodecahedron. | |
| 14 | Acute Rhomb. | |
| 15. | Twenty-four sided crystal, formed by a three-sided pyramid on the planes of the octahedron, | |
| a Represents a rough piece of amorphous diamond. | ||
| b Cascalho, silicious pebbles aggregated, and enveloping diamond. | ||
| c Large diamond confusedly crystallized. |
DIAMOND CUTTER.
| a | The box to receive the powder produced by cutting. |
| b | The stick to which diamonds are cemented. |
| c | A tube to receive the stick, or dopp, whilst the cement cools. |
