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THE

AMERICAN JOURNAL

OF

SCIENCE AND ARTS.

CONDUCTED BY

PROFESSORS B. SILLIMAN, B. SILLIMAN, JR.,

AND

JAMES D. DANA,

IN CONNECTION WITH

PROF. ASA GRAY, OF CAMBRIDGE,
PROF. LOUIS AGASSIZ, OF CAMBRIDGE,
DR. WALDO I. BURNETT, OF BOSTON,
DR. WOLCOTT GIBBS, OF NEW YORK.

SECOND SERIES.
VOL. XVII.-MAY, 1854.

NEW HAVEN: EDITORS.
NEW YORK: G. P. PUTNAM & co.

Printed by B. L. HAMLEN-Printer to Yale College.

CONTENTS OF VOLUME XVII.

NUMBER XLIX.

SCIENTIFIC INTELLIGENCE.

Chemistry and Physics.-On the polarization of light by refraction through a metal : Ad-

ditional experiments on the internal dispersion of light, 121.-On Chemical affinity :
On the supposed new metal, Aridium, 122.- Preparation of pure Caustic Potash : Den-
sity of Selenium : New Alkaloids, 123.- Preparation of Valerianic Acid from Fusel
Oil : Constitution of Butter, 124.- Preparation of Ferrocyanhydric Acid : Separation
of Nickel from Cobalt : On a general method of volumetric analysis, 126.-Volu-

metric.determination of manganese, 126.– Vessels for the preservation of fluohydric

acid, 187.

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