PROGRESSIVE DISCOVERIES AND IMPROVEMENTS
REGIUS PROFESSOR OF NATURAL HISTORY, LECTURER ON MINERALOGY. AND KEEPER OF
THE MUSEUM IN THE UNIVERSITY of EDINBURGH ;
Fellow of the Royal Societies of London and Edinburgh ; Honorary Member of the Royal Irish Academy; of the
Royal Society of Sciences of Denmark; of the Royal Academy of Sciences of Berlin; of the Royal Academy of
Naples; of the Geological Society of France; Honorary Member of the Asiatic Society of Calcutta; Fellow of
the Royal Linnean, and of the Geological Societies of London; of the Royal Geological Society of Cornwall, and
of the Cambridge Philosophical Society; of the Antiquarian Wernerian Natural History, Royal Medical, Royal
Physieal, and Horticultural Societies of Edinburgh ; of the Highland and Agricultural Society of Scotland ; of
the Antiquarian and Literary Society of Perth ; of the Statistical Society of Glasgow; of the Royal Dublin
Society; of the York, Bristol, Cambrian, Whitby, Northern, and Cork Institutions; of the Natural History So-
ciety of Northumberland, Durham, and Newcastle ; of the Imperial Pharmaceutical Society of Petersburgh of
he Natural History Society of Wetterau ; of the Mineralogical Society of Jena ; of the Royal Mineralogical So-
riety of Dresden ; of the Natural History Society of Paris; of the Philomathic Society of Paris; of the Natural
History Society of Calvados; of the Senkenberg Society of Natural History; of the Society of Natural Sciences
and Medicine of Heidelberg ; Honorary Member of the Literary and Philosophical Society of New York ; of
the New York Historical Society; of the American Antiquarian Society; of the Academy of Natural Sciences of
Philadelphia ; of the Lyceum of Natural History of New York ; of the Natural History Society of Montreal ; of
the Franklin Institute of the State of Pennsylvania for the Promotion of the Mechanical Arts ; of the Geological
Society of Pennsylvania; of the Boston Society of Natural History of the United States; of the South African
Institution of the Cape of Good Hope ; Honorary Member of the Statistical Society of France ; Member of the
Entomological Society of Stettin, &c. &c. &c.
APRIL 1849 . . . . OCTOBER 1849.
To DE cowTINUED QUARTERLY.
ADAM AND CHARLES BLACK. -
LONG MAN, BROWN, GREEN, & LONGMANS, LONI)6) N.