Note 10 — PETER KALM’s TRAVELS.
Johann Reinhold Forster translation
The mountains on which fort St. Frederic is built, as likewise those on which the above kinds of stone are found, consisted generally of a deep black lime-stone, lying in lamellæ as slates do, and it might be called a kind of slates, which can be turned into quicklime by fire10. This lime-stone is quite black in the inside, and, when broken, appears to be of an exceeding fine texture. There are some grains of a dark spar scattered in it, which, together with some other inequalities, form veins in it. The strata which ly uppermost in the mountains consist of a grey lime-stone, which is seemingly no more than a variety of the preceding. The black lime-stone is constantly found filled with petrefactions of all kinds, and chiefly the following: