NEW YORK, SATURDAY, DECEMBER 14, 1878.
TABLE OF CONTENTS OF
THE SCIENTIFIC AMERICAN SUPPLEMENT
No. 154,
For the Week ending December 14, 1878.
Price 10 cents. For sale by all newsdealers.
I. ENGINEERING AND MECHANICS.—Portable Steam Pumping Engine, 1 engraving.—New Bone Crushing Mill, 2 engravings.—Picard's Boiler. Extraction of Salt from Salt Water.—Compressed Air Machines. Hydraulic vs. air pressure. Causes of the losses of power. Estimates of useful effects obtainable.—The St. Gothard Tunnel. By Geo. J. Specht, C.E.—Apparatus for Lifting Sunken Vessels, with 8 figures.—Russia Sheet Iron.—Manufacture of Artificial Stone.—Compressed Fuel.—The New Magnesi Process for Boiler Feed Water.
II. FRENCH INTERNATIONAL EXHIBITION OF 1878.—Wine Presses. Description of sixteen new and peculiar wine presses at the Exhibition, with 31 figures and 9 engravings. The Press Primat; Press Mabille; Press David; Samain Press; Marchand, Maupre, Boyries, Chapellier, Marmonier, Nogues, Mailhe, Moreau, Piquet, Delperoux, Terrel des Chenes, and Cassan fils Presses.
The Algerian Exhibit. The street of Algiers, with 1 illustration.—Woolen Fabrics.
III. ELECTRICITY, LIGHT, HEAT, ETC.—Electric Lighting. Estimate of the comparative heating effect in gas and electric lighting, and the consequent loss of power.—The Electric Light. Remarks on its economy.—The Present Bugbear of French Savants.
New Planets.
The Dutch Arctic Expedition. The Peak of Beerenburg, Spitzbergen, with 1 illustration.
IV. CHEMISTRY AND METALLURGY.—New Process for Separating Iodine and Bromine from Kelp.—Inoffensive Colors for Toys.—New Coloring Matters.—Tungsten.
Ozone and the Atmosphere. By Albert R. Leeds, Ph.D. Table of percentage of ozone contained in the atmosphere at various localities in the United States. Register of ozone observations for one month at Upper Saranac Lake, N. Y., giving thermometric and barometric observations, and full record of weather. Examination of methods in ozonometry. Preparation of ozone by electrolysis of water containing sulphuric acid, with 1 engraving. Preparation by electricity, with 1 engraving. Does the electric spark decompose potassium iodide? Collection and preservation of ozone. Preparation by chemical methods. Critical examination of ozonoscopes. Potassium iodide; starch; paper classification of ozonoscopes. Examination of ozonoscopes under certain conditions.
Limits of the Combustibility of Gases.—The Diffusion of Salicylate of Soda.—Singular use of Fluorescein.—New Metal. Philippium By M. Marc Delafontaine.—Better Pharmaceutical Education. By Richard V. Mattison, Ph. G.—An El Dorado for Apothecaries.
V. MEDICINE AND HYGIENE.—The Science of Easy Chairs. The muscular conditions of fatigue, and how to obtain the greatest rest. How easy chairs should be made.
Prof. Huxley on the Hand. Abstract of his inaugural lecture before the South London Workingmen's College.
Paint from a Sanitary Point of View. The required abolition of absorbent surfaces in dwellings. Lead poisoning from paint not thoroughly dry. Cases described in which white lead paint in dwellings never dries, but gives off poisonous particles, which are inhaled by the inmates, causing depression, weakness headache, and loss of appetite. Zinc recommended in paint to avoid lead poisoning, and the new oxy-sulphide of Zinc described, with covering qualities equal to white lead.
The Purification of Sewage. By Henry Robinson, F.R.S. Paper read before the Sanitary Institute of Great Britain. Progress in purifying sewage by precipitation. The use of chemicals for precipitating, deodorizing, and disinfecting. Practical data on a large scale, with cost. Average number of gallons per head of population, etc., of the successful system now in operation at Coventry and Hertford. How the water is removed from the sludge by filter presses. Drying and removal of the sludge. Theoretical and actual values of the sludge for fertilizing.
VI. AGRICULTURE, HORTICULTURE, ETC.—The Broadside Steam Digger, with 1 engraving.—Shall I Plow the Lawn?—Bee Culture.
