قراءة كتاب Scientific American, Volume XXXVI., No. 8, February 24, 1877 A Weekly Journal of Practical Information, Art, Science, Mechanics, Chemistry, and Manufactures.
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Scientific American, Volume XXXVI., No. 8, February 24, 1877 A Weekly Journal of Practical Information, Art, Science, Mechanics, Chemistry, and Manufactures.
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THE SCIENTIFIC AMERICAN SUPPLEMENT,
No. 60,
For the Week ending February 24, 1877.
I. ENGINEERING AND MECHANICS.—Artificial Production of Ice by Steam Power—The American Roller Skate Rink, Paris, 1 engraving.—The Little Basses Light House, 4 figures.—The Souter Point Electric Light.—On the Minute Measurements of Modern Science, by ALFRED MAYER.—Method of Measuring by Means of the Micrometer Screw furnished with the Contact Level; Method of Electric Contact Applied to Measurements with the Micrometer Screw, 2 engravings.—Abstracts from Report of the Boston Society of Civil Engineers on the Metric System.—New Turret Musical and Chiming Clock for the Bombay University, with 1 page of engravings.—Water Gas and its advantages, by GEO. S. DWIGHT.—Brattice Cloths in Mines.—Eight Horse Power Portable Steam Engine, with dimensions, particulars, and 1 page of engravings.—Clyde Ship Building and Marine Engineering in 1876.—Four Masted Ships.—New Bridges at and near New York city.—The Sutro Tunnel.—Independent Car Wheels.—Passenger Travel, New York city.
II.—TECHNOLOGY.—Design for Iron Stairway, and Iron Grilles, with 3 engravings.—The Process of Micro-photography used in the Army Medical Department.—Direct Positives for Enlarging.—A Monster Barometer.—Architectural Science, Carpentry Queries and Replies.—The Carpet Manufactures of Philadelphia. How the Centre Selvage is Formed, 3 figures.—Glass of the Ancients.—On the Preservation of Meat; a resume of the various methods now practiced.—California Pisciculture.—Savelle's System of Distillation, 2 engravings.—New Bromine Still, by W. Arvine, 1 engraving.—The Phoenix Steam Brewery, New York.—French Cognac Distillation, 1 engraving.—Schwartz's Sugar Refinery, London. General description of the establishment.—Vienna Bread and Coffee.—How Pictorial Crystals are Produced and Exhibited.
III. LESSONS IN MECHANICAL DRAWING. New Series. By Professor C.W. MacCord; with several engravings.
IV. ELECTRICITY, LIGHT, HEAT, SOUND, ETC.—Magnetic Action of Rotatory Conductors.—The Sensation of Sound.—Sympathetic Vibration of Pendulums.—Protection from Lightning.—Musical Tones, photograph of.
V. MEDICINE, HYGIENE, ETC.—On the Treatment of Typhoid Fevers. By Alfred L. Loomis, M.D.—Hydrophobia Cured by Oxygen.—The efficacy of Lymph, by M. HILLER.—Success of Chloral Hydrate for Scalds and Burns.—Uses of Cyanide of Zinc.—Dr. Brown-Sequard on Nerve Disease.
VI. MISCELLANEOUS.—Geological Notes.—A Geological Congress.—The last Polar Expedition.—Old Men of Science.—Pre-glacial Men.—Post-glacial period, Esthonia.—Northern Pacific Formations.
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DATES AND THE DATE PALM.
Even those whose knowledge of the customs of the Orient extends no further than a recollection of the contents of that time-honored story book, the "Arabian Nights," are doubtless aware that, since time immemorial, the date has been the chief food staple of the desert-dwellers of the East. The "handful of
