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ib.

II. Basaltin and Basalt, or Basalton

III. Basaltin, with Porphyry

IV. Basaltin and Wacken

V. Wacken and Clay .....

VI. Jasper and Keralite

VII. Slate and Chlorite Slate

VIII. Felsite and Basaltin

IX. Granite and Basalt

X.

Granite, with Gneiss ......

XI. Granite and Granitic Porphyry

XII. Gneiss and Mica Slate

XIII. Steatite and Asbestos

XIV. Shale and Coal ..........

Various

ib.

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170

172

ib.

173

ib.

175

ib.

176

189

ib.

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192

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II. Vesicular Lava

III. Indurated Mud ....

IV. Tufo

V. Pumice

VI. Obsidian

VII. Volcanic Intrite

VIII. Volcanic Glutenite

IX. Substances ejected or changed

General Remarks, and Examples of singular

Volcanoes

Fumavols coco.

Veinstones

Appendix or

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328

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443

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519

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observations.

THIS division comprehends the rocks

General which consist of different substances blended together, and for which no distinct denominations have been adopted. Many of them have been classed under vague names, particularly that of granite.

Under the division of Aggregated Rocks, Gmelin's plan. Gmelin, in his edition of Linnæus, has ar

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