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AMERICAN JOURNAL

OF

SCIENCE AND ARTS.

CONDUCTED BY

PROFESSORS B. SILLIMAN, B. SILLIMAN, Jr.,

AND
JAMES D. DANA,

AND

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. PUT NAM & CO.

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

253526

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, 127.

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