Edinburgh:
Published by THE ALEMBIC CLUB.
Edinburgh Agent:
WILLIAM F. CLAY, 18 Teviot Place.
London Agents:
SIMPKIN, MARSHALL, HAMILTON, KENT, & CO. LTD.
1898.
PREFACE.
Black's Paper entitled "Experiments upon Magnesia Alba, Quicklime, and some other Alcaline Substances" was read in June 1755, and was first published in "Essays and Observations, Physical and Literary. Read before a Society in Edinburgh, and Published by them," Volume II., Edinburgh, 1756; pp. 157-225. It was subsequently reprinted several times during the life of the author, not only in later editions of these Essays, but also in a separate form. Copies of the original Paper are now very difficult to obtain, and the later reprints have also become scarce.