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 about Babylon; and that the Buildings of the old Babylon were of Brick cemented with this Subtance.

2. The Piaphaltos, found, according to Diocorides, in the Ceraunian Mountains of Apollonia; this was not o hard as the former, and of a more pleaant Smell; it is now found in the Campania of Rome, near a mall Town called Catho, where it ouzes through the Crannies of Rocks, and is at firt of the Conitence of Honey, but oon dries and becomes hard.

3. Amber, of which the Author treats hereafter in this Work.

4. Jet, the Gagates of Diocorides, and black Amber of the Shops; a dry, hard, hining Subtance, of a fine black, burning like Pitch, and emitting a thick black Smoke. Its Name it had from Gagis, a Town in Lycia, where it was originally found: it is now dug in Pruia, France, Germany, Sweden, and ome Parts of England.

5. Cannel Coal, the Ampelites of Diocorides, called alo Terra Pharmacitis by ome Authors, though its Ue in Medicine at preent is almot unknown. This is as hard as the foregoing, and takes an excellent Polih; we have it in many Parts of England, where it is turned into Toys of different Kinds, And

6. The Lithanthrax, or common Coal, well known to all.

Thee were the olid Bitumens, known as uch to the Antients, and which, though they were not all known o early as in this Author's Days, I judged it not amis thus hortly to mention here; that it may be oberved from their Qualities and Decriptions, and thoe of the two mentioned by the Author, that it was neither of thee that he knew, by either of the two Names of thoe he has here decribed: but that he did know the lat is certain. XXV. But the Lipara Stone empties itelf as it were in burning; and becomes like the Pumice: changing at once both its Colour and Denity; for before burning it is black, mooth, and compact. This Stone is found in the Pumices, eparately, in different Places, and as it were in Cells, no where continuous with the Matter of them. It is