C'est encore un vrai _filon_; mais dans une
montagne de _pierre a chaux:_ C'est a-dire, que cette montagne a aussi
ete _fendue_, et que la _fente_ a ete remplie d'une _gangue_. La matiere
de ce _filon_ est encore _calcaire_ en plus grande partie; mais
cette _pierre a chaux_ distincte est _ferrugineuse_, et parsemee de
concretions de _jaspe_ comme celles _d'Elbingerode:_ on y trouve aussi
une matiere verdatre, qui, comme le _jaspe_, ne fait pas effervescence
avec l'eau forte."
Here is a phenomenon which is altogether incompatible with the theory
that this author has given us for the explanation of those appearances.
He supposes empty crevices in the schistus mountains at the bottom of
the sea; these crevices he supposes filled by the deposits of the sea,
at the same time, and with the same materials with which the lime-stone
strata were formed above the schistus mountains; but we find one of
those same veins in these secondary calcareous strata. Now, tho' we
should be disposed to allow, that, in the primordial mountain, of which
we are supposed not to know the origin, there might have been empty
crevices which were afterwards filled with materials transported by the
sea, this cannot be admitted as taking place in the loose or incoherent
materials deposited above the schistus.
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