Some Salient Points in the Science of the Earth

WORLD-MAKING.

DEDICATED TO THE MEMORY OF
ADAM SEDGWICK AND SIR RODERICK IMPEY MURCHISON,
Whose joint Labours carried
our Knowledge of the History of the Earth
two Stages farther back,
and whose Differences of Opinion served to render
more glorious their Victories.

Fig. 1. Diagram illustrating Folding of the Crust of the Earth.—(a) Undisturbed crust. (b) Primary depression and deposition. (c) Mountain-making folds with their relations to an upper and lower magma.
Fig. 2. Result of folding, faulting, and denudation, as seen at Cascade Mountain, Western Canada
(after McConnell, p. 33).

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