The American Journal of Science and Arts, Volume 50 (First Series)

PROFESSOR OF CHEMISTRY, PHARMACY, MINERALOGY AND GEOLOGY.

IN YALE COLLEGE.

THE

AMERICAN JOURNAL

OF

SCIENCE AND ARTS.

CONDUCTED BY

PROFESSOR SILLIMAN

AND

BENJAMIN SILLIMAN, JR.

VOLUME L.

GENERAL INDEX TO FORTY-NINE VOLUMES.

NEW HAVEN:

PRINTED FOR THE EDITORS BY B. L. HAMLEN, Printer to Yale College.

PREFACE.