CHAP. 27. —ANTHRACITIS.
There is also a fossil stone found in Thesprotia, known as
"anthracitis," [Note] and resembling a burning coal [Note] in appearance.
Those who have stated that it is a native also of Liguria, are
mistaken, in my opinion, unless perhaps it was to be found
there in their time. Some of these stones, they say, are surrounded
with a vein of white. Like those which we have
mentioned above, they have a fiery colour, but there is this
peculiarity in them, that when thrown into the fire they have all
the appearance of becoming quenched and deadened; while, on
the other hand, if they are drenched with water, they become
doubly glowing. [Note]
