THE

AMERICAN JOURNAL

OF

SCIENCE AND ARTS.

CONDUCTED BY

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

AND

JAMES D. DANA.

SECOND SERIES.

VOL. V.-MAY, 1848.

NEW HAVEN:

PRINTED FOR THE EDITORS BY B. L. HAMLEN,

Printer to Yale College.

Sold by H. DAY, New Haven.-LITTLE & BROWN, and T. WILEY, Jr., Boston.-C. S.
FRANCIS & Co. and WILEY & PUTNAM, New York.-CAREY & HART, Philadelphia.-
N. HICKMAN, Baltimore, Md.-WILEY & PUTNAM, London.-HECTOR Bossange & Co.,
Paris.-NESTLER & MELLE, Hamburgh.

CONTENTS OF VOLUME V.

NUMBER XIII.

ART. I. Researches on the Radiations of Incandescent Bodies,

and on the Elementary Colors of the Solar Spectrum; by

M. MELLONI,

II. On the Cypress Timber of Mississippi and Louisiana; by Mon-

TROVILLE W. DICKESON, M.D., and ANDREW BROWN,

III. Account of some Researches on the Protein bodies of Peas

and Almonds, and a Body of a somewhat similar nature ex-

isting in Oats; by Prof. JOHN P. NORTON,

IV. Letter on Philosophical Induction; by JAMES D. WHELPLEY,

V. On the Resistance presented by Fluids to Electric Conduction;

by Prof. EBEN N. HORSFORD,

Page.

1

15

33

VI. Fossil Footprints of a New Species of Quadruped; by JAMES

DEANE,

VII. On the Depth and Saltness of the Ocean,

VIII. On the Limit of Subdivision by Trituration and Solution, and

the principles on which the limit may be indefinitely ex-

tended; by B. F. JOSLIN, M.D.,

IX. On the Electric Telegraph of Prof. Morse; by CHARLES T.

CHESTER,

36

40

41

48

55

X. On the Fossil Remains of the soft parts of Foraminifera, dis-

covered in the Chalk and Flint of the Southeast of England;

by GIDEON ALGERNON MANTELL, Esq., LL.D., F.R.S., &c., 70

XI. On the Chemical Constitution of Gelatine and its Transforma-

tions; by T. S. HUNT, -

XII. Of the Law which governs the flow of Elastic Fluids through

Orifices; by ELI W. BLAKE,

XIII. On the Comet of 10th month, (October 1st,) 1847; by

WILLIAM MITCHELL,

XIV. Results of Astronomical Observations made during the years

1834, 5, 6, 7, 8, at the Cape of Good Hope; being the com-

pletion of a telescopic survey of the whole surface of the

Heavens, commenced in 1825; by Sir JOHN F. W. HER-

SCHEL, Bart., K. H., &c. &c. &c.,

74

78

83

86

XV. On a law of Cohesive Attraction, as exemplified in a Crystal

of Snow; by JAMES D. DANA,

XVI. Proceedings of the Meeting of the Association of American

Geologists and Naturalists, held at Boston, September, 1847, 102

100

SCIENTIFIC INTELLIGENCE.

Chemistry and Physics.-On some New Compounds of Phosphorus, by A. WURTZ,

116.-Sulphoxyarsenic Acid: On some Combinations of Nitric and Hyponitric

Acids, by C. Gerhardt, 117.—On the Products of the Decomposition of Gel-

atine by Chromic Acid, by A. SCHLIEPER, 118.-On the Products of the Oxyd-