NEW YORK, MAY 28, 1887
Reading edition
Scientific American Supplement. Vol. XXIII, No. 595.
Scientific American established 1845
Scientific American Supplement, $5 a year.
Scientific American and Supplement, $7 a year.
TABLE OF CONTENTS.
I. BOTANY.—The Relation of Tabasheer to Mineral Substances.—The composition of this curious secretion of the bamboo.—Analyses and properties of the material, according to various observers.—Its appearance under the microscope. 1 illustration.
II. CHEMISTRY.—Apparatus for Drying Flour.—An apparatus for determining the moisture in flour. 1 illustration.
III. ELECTRICITY.—Automatic Commutator for Incandescent Lamps.—An apparatus for lighting automatically a new lamp to replace one that has failed. 1 illustration.
Definitions and Designations in Electro-Technics.—Mr. Jamieson's proposed code of electric symbols—literal and graphic. 4 illustrations.
IV. ENGINEERING.—New Dredging Machinery.—The dredger Ajax, recently built in California.—Its dimensions and capacity. 1 illustration.
Reservoir Dams.—By DAVID GRAVELL.—The engineering details of dams.—Typical masonry and earthwork dams of the world. 23 illustrations.
The Flexible Girder Tramway.—A new type of suspended railway—a modification of the wire tramway system. 21 illustrations.
V. HYGIENE.—Climate in its Relation to Health.—By G.V. POORE, M.D.—The third lecture of this series.—Consideration of the floating matter of the air and diseases caused thereby.—Causation of hay fever.
VI. MATHEMATICS.—Radii of Curvature Geometrically Determined.—By Prof. C.W. MACCORD, Sc.D.—No. VII. Path of a point on a connecting rod. 3 illustrations.
VII. MICROSCOPY.—Improved Microscopical Settling Tube.—By F. VANDERPOEL.—New tubes for use in urinary analysis. 4 illustrations.
VIII. MISCELLANEOUS.—Apparatus for Manufacturing Bouquets.—An ingenious machine for facilitating the construction of bouquets. 1 illustration.
Bozerian's Refrigerant Punkas.—A fan worked by the feet, a substitute for the Indian punka. 2 illustrations.
How to Make a Kite without a Tail.—An improved form of kite described and illustrated. 1 illustration.
Punkas.—By J. WALLACE, C.E.—The mechanics of punkas; experiments on their rate of swing.
The Edible Earth of Java.—An account of this curious substance, its taste and appearance.
IX. NAVAL ENGINEERING.—Another Remarkable Torpedo Boat.—Over twenty-eight miles an hour.—Full particulars of the trial of one of the new Italian torpedo boats, built by Yarrow & Co.
Copeman & Pinhey's Life Rafts.—A new life raft for use on steamers, folding into deck settees. 3 illustrations.
X. PHYSICS.—Sunlight Colors—By Capt. W. DE W. ABNEY.—A valuable lecture on the cause of the colors of the sun, and their relative intensities. 3 illustrations.
The Wave Theory of Sound Considered.—By HENRY A. MOTT, Ph.D., LL.D.—Arguments against the generally accepted theory of sound.