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THE

AMERICAN JOURNAL

SCIENCE AND ARTS.

CONDUCTED BY
PROFESSORS B. SILLIMAN, B. SILLIMAN, JR.,

AND
JAMES D. DANA.

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253521

CONTENTS OF VOLUME XII.

NUMBER XXXIV.

Page.

Art. I. On Certain Meteorological Coincidences ; by J. H.

ALEXANDER, Esq., . . . . . . . 1

II. On a Method for distinguishing between Biaxial and Uniaxial

Crystals when in thin plates, and the results of the exam-

ination of several supposed Uniaxial Micas ; by W. P. Blake, 6

III. On some of the Thermal Waters of Asia Minor; by Dr.

J. LAWRENCE SMITH, . . . . . . . 10

IV. Uses of the Stillingia sebifera or Tallow Tree, with a no

tice of the Pe-la, an Insect-wax of China; by D. J. Mac-

GOWAN, M.D., . . . . . . . 17

V. On the sudden disappearance of the Ice on Lake Champlain,

at the breaking up of Winter ; by Rev. ZADOCK THOMPSON,

VI. On Coral Reefs and Islands ; by JAMES D. Dana, . . 25

VII. A description of a new Sand-Bath with Water-Bath and Dis-

tilling Apparatus attached, erected in the Yale Analytical

Laboratory ; by Prof. John P. NORTON, · · ·

VIII. On Microscopes and Microscopy; by W. I. BURNETT, ..

IX. On the Connection of Chemical Forces with the Polarization

of Light; by Nevil STORY MASKELYNE, Esq., M.A.,

X. On Atmospheric Magnetism; by Prof. Faraday,

XI. On Eupyrchroite of Crown Point, New York; by CHARLES

T. JACKSON, M.D., ·

· · · ·

XII. On the Recent Condition of Kilauea; by Rev. C. S. LYMAN,

including a letter from Rev. T. Coan, . . . . .

XIII. On the causes of the disengagement of Electricity in Plants,

and upon Vegeto-terrestrial Currents; by M. BECQUEREL, • 83

XIV. On the Rings of Saturn; by G. P. Bond, . . . 97

XV. On the Constitution of Saturn's Ring; by Prof. B. PEIRCE, 106

XVI. On Saturn's Ring; by DANIEL KIRKWOOD, A.M., . . 109

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