Scientific American Supplement, No. 643, April 28, 1888   By: Various

SCIENTIFIC AMERICAN SUPPLEMENT NO. 643

NEW YORK, APRIL 28, 1888

Scientific American Supplement. Vol. XXV., No. 643.

Scientific American established 1845

Scientific American Supplement, $5 a year.

Scientific American and Supplement, $7 a year.

TABLE OF CONTENTS.

I. ARCHÆOLOGY. The Subterranean Temples of India. The subterranean temples of India described and illustrated, the wonderful works of the ancient dwellers in Hindostan. 3 illustrations. 10275

II. BIOGRAPHY. General F. Perrier. Portrait and biography of the French geodesian, his triangulations in Algiers and Corsica. 1 illustration. 10264

The Crown Prince of Germany Prince William and his son. Biographical note of Prince William, the heir to the German throne. 1 illustration. 10263

III. BIOLOGY. Poisons. Abstract of a lecture by Prof. MEYMOTT TIDY, giving the relations of poisons to life. 10273

The President's Annual Address to the Royal Microscopical Society. The theory of putrefaction and putrefactive organisms. Exhaustive review of the subject. 10264

IV. CHEMISTRY. Molecular Weights. A new and simple method of determining molecular weights for unvolatilizable substances. 10271

V. CIVIL ENGINEERING. Concrete. By JOHN LUNDIE. A practical paper on the above subject. The uses and proper methods of handling concrete, machine mixing contrasted with hand mixing. 10267

Timber and Some of its Diseases. By H. MARSHALL WARD. The continuation of this important treatise on timber destruction, the fungi affecting wood, and treatment of the troubles arising therefrom. 10277

VI. ENGINEERING. Estrade's High Speed Locomotive. A comparative review of the engineering features of M. Estrade's new engine, designed for speeds of 77 to 80 miles an hour. 1 illustration. 10266

Machine Designing. By JOHN B. SWEET. First portion of a Franklin Institute lecture on this eminently practical subject. 2 illustrations. 10267

VII. METEOROLOGY. The Peak of Teneriffe. Electrical and meteorological observations on the summit of Teneriffe. 10265

VIII. MISCELLANEOUS. Analysis of a Hand Fire Grenade. By CHAS. CATLETT and R.C. PRICE. The contents of a fire grenade and its origin. 10271

How to Catch and Preserve Moths and Butterflies. Practical directions for collectors. 10275

The Clavi Harp. A new instrument, a harp played by means of keys arranged on a keyboard 1 illustration. 10275

Inquiries Regarding the Incubator. By P.H. JACOBS. Notes concerning the incubator described in a previous issue (SUPPLEMENT, No. 630). Practical points. 10265

IX. PHYSICS. The Direct Optical Projection of Electro dynamic Lines of Force, and other Electro dynamic Phenomena. By Prof. J.W. MOORE Second portion of this profusely illustrated paper, giving a great variety of experiments on the phenomena of loop shaped conductors. 26 illustrations. 10272

The Mechanics of a Liquid. An ingenious method of measuring the volume of fibrous and porous substances without immersion in any liquid. 1 illustration. 10269