The Subterranean World

Transcriber’s Note:
A complex full-page chart, ‘TABULAR GEOLOGICAL PROFILE’, appeared as p. 3, in mid-paragraph, and has been moved slightly forward. It is presented here as a single image. The link provided below the chart will direct the reader to a text rendition, found at the end of the text.
In general, the position of illustrations have been adjusted slightly, where necessary, to avoid falling in mid-paragraph.
THE
SUBTERRANEAN WORLD.
LONDON: PRINTED BY
SPOTTISWOODE AND CO., NEW-STREET SQUARE
AND PARLIAMENT STREET
CARBONIFEROUS FOREST, CARBONIFEROUS PERIOD.
DR. GEORGE HARTWIG,
AUTHOR OF
‘THE SEA AND ITS LIVING WONDERS,’ ‘THE TROPICAL WORLD,’ ‘THE POLAR WORLD,’