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Scientific American Supplement, No. 613, October 1, 1887   By:

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[Illustration]

SCIENTIFIC AMERICAN SUPPLEMENT NO. 613

NEW YORK, OCTOBER 1, 1887.

Scientific American Supplement. Vol. XXIV., No. 613.

Scientific American established 1845

Scientific American Supplement, $5 a year.

Scientific American and Supplement, $7 a year.

TABLE OF CONTENTS.

I. BIOGRAPHY. Dr. Morell Mackenzie. Biographical note and portrait of the great English laryngologist the physician of the Prussian Crown Prince. 1 illustration. 9794

II. BOTANY. Soudan Coffee. The Parkia biglobosa . Its properties and appearance, with analyses of its beans. 8 illustrations. 9797

Wisconsin Cranberry Culture. The great cranberry crop of Wisconsin. The Indian pickers and details of the cultivation. 9796

III. CHEMISTRY. Analysis of Kola Nut. A new article adapted as a substitute for cocoa and chocolate to military and other dietaries. Its use by the French and German governments. 9785

Carbonic Acid in the Air. By THOMAS C. VAN NUYS and BENJAMIN F. ADAMS, Jr. The results of eighteen analyses of air by Van Nuys apparatus. 9785

The Crimson Line of Phosphorescent Alumina. Note on Prof. Crooke's recent investigation of the anomalies of the oxide of aluminum as regards its spectrum. 9784

IV. ELECTRICITY. Electric Time. By M. LITTMANN. An abstruse research into a natural electric standard of time. The results and necessary formulæ. 9793

New Method of Maintaining the Vibration of a Pendulum. Ingenious magneto electric method of maintaining the swinging of a pendulum. 9794

The Part that Electricity Plays in Crystallization. C. Decharme's investigations into this much debated question. The results of his work described. 3 illustrations. 9793

V. ENGINEERING. A New Type of Railway Car. A car with lateral passageways, adapted for use in Africa 2 illustrations. 9792

Centrifugal Pumps at Mare Island Navy Yard, California. By H.R. CORNELIUS. The great pumps for the Mare Island dry docks. Their capacity and practical working. 9792

Foundations of the Central Viaduct of Cleveland, O. Details of the foundations of this viaduct, probably the largest of its kind ever constructed. 9792

VI. METALLURGY. Chapin Wrought Iron. By W.H. SEARLES. An interesting account of the combined pneumatic and mechanical treatment of pig iron, giving as product a true wrought iron. 9785

VII. METEOROLOGY. On the Cause of Iridescence in Clouds. By G. JOHNSTONE STONEY. An interesting theory of the production of prismatic colors in clouds, referring it to interference of light. 9798

The Height of Summer Clouds. A compendious statement, giving the most reliable estimation of the elevations of different forms of clouds. 9797

VIII. MISCELLANEOUS. The British Association. Portraits of the president and section presidents of the late Manchester meeting of the British Association for the Advancement of Science, with report of the address of the president, Sir Henry E. Roscoe. 9 illustrations. 9783

IX. PHYSIOLOGY. Hypnotism in France. A valuable review of the present status of this subject, now so much studied in Paris... Continue reading book >>


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