EXPLANATION OF THE PLATES OF THE FIRST VOLUME.
Reading edition
FRONTISPIECE.
This is explained in pages 236, 237.
PLATE I.
Fig. MINERAL DEPOSITS.
1. Horizontal beds or strata.
a. Veins or dykes.
2. Bending strata.
3. Minerals in detached masses.
4. Disjoined strata.
b. A fault.
PLATE II.
CRYSTALS, &c.
5. Octohedron.
6. Rough diamond.
7. Profile of a brilliant-cut stone.
8. Profile of a rose-cut stone.
9. Plane of a table-cut stone.
10. Plane and profile of the Pitt diamond.
11. Dodecahedron.
12. Rough garnet.
13. Six-sided pyramids, joined base to base.
14 Regular four-sided prism.
15. Six-sided prism.
16. Cube.
17. Four-sided pyramid having a rhomb for its base.
viiiPLATE III.
SECTION OF ROCKS.
I. Primitive Rocks.
Fig.
1. Granite.
2. Gneiss.
3. Mica-slate.
4. Clay-slate.
a. Lime-stone.
b. Quartz.
5. Primitive lime-stone.
II. Secondary Rocks.
1. Transition Rocks.
6. Grey-wacka.
7. Transition lime-stone.
2. Floetz Rocks.
8. Old red sand-stone.
9. Alternating strata of lime-stone and sand-stone.
III. Alluvial Deposits.
10. Alluvial strata of clay, gravel, &c., &c.
The BINDER is desired to insert all the Plates, except the Frontispieces, immediately after the Explanations in the respective Volumes.
ix
Pl. 1. Vol. I. J. Shury. sculp. Sections of Strata &c.
xi
Pl. 2. Vol. I. CRYSTALS &c.
xiii
Pl. 3. Vol. I. Section of Rocks. J Shury sculp.
1USEFUL KNOWLEDGE.