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Scientific American Supplement, No. 286, June 25, 1881   By:

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[Illustration]

SCIENTIFIC AMERICAN SUPPLEMENT NO. 286

NEW YORK, JUNE 25, 1881

Scientific American Supplement. Vol. XI, No. 286.

Scientific American established 1845

Scientific American Supplement, $5 a year.

Scientific American and Supplement, $7 a year.

TABLE OF CONTENTS.

I. ENGINEERING AND MECHANICS. One Thousand Horse Power Corliss Engine. 5 figures, to scale, illustrating the construction of the new one thousand horse power Corliss engine, by Hitch, Hargreaves & Co.

Opening of the New Workshop of the Stevens Institute of Technology. Speech of Prof. R.W. Raymond, speech of Mr. Horatio Allen.

Light Steam Engine for Aeronautical Purposes. Constructed for Capt. Mojoisky, of the Russian Navy.

Complete Prevention of Incrustation in Boilers. Arrangement for purifying boiler water with lime and carbonate of soda. The purification of the water. Examination of the purified water. Results of water purification.

Eddystone Lighthouse. Progress of the work.

Rolling Mill for Making Corrugated Iron. 1 figure. The new mill of Schultz, Knaudt & Co., of Essen, Germany.

Railway Turntable in the Time of Louis XIV. 1 figure. Pleasure car. Railway and turntable at Mary le Roy Chateau, France, in 1714.

New Signal Wire Compensator. Communication from A. Lyle, describing compensators in use on the Nizam State Railway, East India.

Tangye's Hydraulic Hoist. 2 figures.

Power Loom for Delicate Fabrics. 1 figure.

How Veneering is Made.

II. TECHNOLOGY AND CHEMISTRY. The Constituent Parts of Leather. The composition of different leathers exhibited at the Paris Exhibition. Amount of leather produced by different tonnages of 100 pounds of hides. Percentage of tannin absorbed under different methods of tanning. Amounts of gelatine and tannin in leather of different tonnages, etc.

Progress in American Pottery.

Photographic Notes. Mr. Waruerke's New Discovery. Method of converting negatives directly into positives. Experiments of Capt. Bing on the sensitiveness of coal oil Bitumen plates. Method of topographic engraving. By Commandant DE LA NOE. Succinate of Iron Developer. Method of making friable hydro cellulose.

Photo Tracings in Black and Color.

Dyeing Reds with Artificial Alizarin. By M. MAURICE PRUD'HOMME.

III. ELECTRICITY, PHYSICAL SCIENCE, ETC. On Faure's Secondary Battery.

Physical Science in Our Common Schools. An exceptionally strong argument for the teaching of physical science by the experimental method in elementary schools, with an outline of the method and the results of such teaching.

On the Law of Avogadro and Ampere. By E. VOGEL.

IV. GEOGRAPHY, GEOLOGY, ETC. Petroleum and Coal in Venezuela.

Geographical Society of the Pacific.

The Behring's Straits Currents. Proofs of their existence.

Experimental Geology. Artificial production of calcareous pisolites and oolites. On crystals of anhydrous lime. 4 figures.

V. NATURAL HISTORY, ETC. Coccidæ. By Dr. H. BEHR. An important paper read before the California Academy of Sciences. The marvelous fecundity of scale bugs. Their uses. Their ravages. Methods of destroying them.

Agricultural Items.

Timber Trees.

Blood Rains.

VI. MEDICINE AND HYGIENE. Medical Uses of Figs.

Topical Medication in Phthisis.

VII. ARCHITECTURE, ETC. Suggestions in Architecture. Large illustration. The New High School for Girls, Oxford, England.

PETROLEUM AND COAL IN VENEZUELA.

MR. E. H. PLUMACHER, U. S. Consul at Maracaibo, sends to the State Department the following information touching the wealth of coal and petroleum probable in Venezuela:

The asphalt mines and petroleum fountains are most abundant in that part of the country lying between the River Zulia and the River Catatumbo, and the Cordilleras... Continue reading book >>


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