If
one bed of limestone is thus found to have been of a marine origin,
every concomitant bed of the same kind must be also concluded to have
been formed in the same Manner.
[Note 2: "Cette sommite elevee de 984 toises au dessus de notre lac, et
par consequent de 1172 au dessus de la mer, est remarquable en ce que
l'on y voit des fragmens d'huitres petrifies.--Cette montagne est
dominee par un rocher escarpe, qui s'il n'est pas inaccessible, est du
moins d'un bien difficile acces; il paroit presqu'entierement compose
de coquillages petrifies, renfermes dans un roc calcaire, ou marbre
grossier noiratre. Les fragmens qui s'en detachent, et que l'on
rencontre en montant a la Croix de fer, sont remplis de _turbinites_ de
differentes especes." M. DE SAUSSURE, _Voyage dans les Alpes_, p. 394.]
We thus shall find the greatest part of the calcareous masses upon this
globe to have originated from marine calcareous bodies; for whether
we examine marbles, limestones, or such solid masses as are perfectly
changed from the state of earth, and are become compact and hard, or
whether we examine the soft, earthy, chalky or marly strata, of which so
much of this earth is composed, we still find evident proofs, that those
beds had their origin from materials deposited at the bottom of the sea;
and that they have the calcareous substance which they contain, from the
same source as the marbles or the limestones.
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