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SCIENCE AND ARTS.
PROFESSORS B. SILLIMAN, B. SILLIMAN, Jr.,
IN CONNECTION WITH
PROF. ASA GRAY, OF CAMBRIDGE,
VOL. XVII.-MAY, 1854.
NEW HAVEN: EDITORS.
Printed by B. L. HAMLEN-Printer to Yale College.
CONTENTS OF VOLUME XVII.
VI. The Earl of Rosse's Telescopes, and their Revelations in the
Sidereal Heavens; by Rev. W. SCORESBY, D.D., F.R.S., etc.,
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