Oldal 48 [48]
298 MINERALOGICAL REMARKS.
heat to five or fix times their original bulk.——Here we have
again Mr. Fichtel’s zcolites, and fome part of this mafs is his black
fibrous pumex-like zeolite mentioned by him page 653. ‘This
gentleman there makes this juft obfervation, that “ all thefe zeolites,
from the light grey to the coal black, run into one another; and E
have,” fays he, “ collected a fuite of fourteen fpecimens, in which
each variety is clofely conneéted with another, not only in:colour, but
likewife in texture.” In what countries are {uch foffils found, and
in what catalogues do we meet with fuch foffils defcribed? Is it not in
indifputable volcanic countries, and often where the fire ftill rages ;
and in the catalogues of their produ@s? Neptuni/mus, to which I am
ready to attribute much of the formation of our globe, or rather of
its thin epidermis, with which we are only acquainted, muft fome¬
where ceafe, and vwlcanifinus begin; and the only difficulty, and
where the learned fo little agree, is, where fhall the one ceafe
and the other begin? I always thought with the great Linneus,
“6 Ubicunque pumices copiofiores, ibi quondam vivi vulcani exflitere,
licet dudum emortui oblivioni traditi”’ ‘This curious rock appeared
to reft on the decompofed argillaceous porphyry.
A little further on are rocks formed of large blocks of bafaltes;
and ftill further, I found a great many loofe fragments of filex or
petrofilex, containing impreffions of organic bodies,
Early in the
evening I reached Telkobanya, a large ill built village or town. I
2 took
46