| TABLE OF CONTENTS. |
|---|
| I. | [ENGINEERING, ETC.—Steel Structures.—Best use of different grades of steel.—From a paper by Mr. JAS. CHRISTIE.] |
| [Natural Gas Fuel and its Application to Manufacturing: Purposes.—Paper read before the Iron and Steel Institute by Mr. ANDREW CARNEGIE.—First use of the gas.—Wells near Pittsburg.—Extent of territory underlain with gas.—Cost of piping.—Analyses ofnatural gas.] |
| [A Gas Engine Water Supply Alarm.—1 figure.] |
| [The Water Supply of Ancient Roman Cities.—An address by Prof. W.H. CORFIELD.—Aqueducts for the supply of Borne.—The aqueduct bridge Pont du Gard.—The supply of Lyons.—Construction of underground aqueducts.] |
| [Steam Engine Economy.—By Chief Engineer J. LOWE, U.S.N.—With diagram.] |
| [The "Elastic Limit" in Metals.—Selection of wire for suspension bridges, etc.] |
| [Prices of Metals in 1874 and 1884.—With table.] |
| II. | [ TECHNOLOGY.—A Method of Measuring the Absolute Sensitiveness of Photographic Dry Plates.—By Wm. H. PICKERING.—From the proceedings of the Academy of Arts and Sciences.] |
| [Soldering and Repairing Platinum Vessels in the Laboratory.—By J.W. PRATT.] |
| [The Helicoidal or Wire Stone Saw invented by M.P. GAY.—With engraving of quarry showing application of saw, and 5 figures.] |
| [Portable Prospecting Drill and Automatic Safety Gear shown at the Inventions Exhibition.—With 2 engravings.] |
| III. | [ELECTRICITY, ETC.—Electricity in Warfare.—By Lieutenant B.A. FISKE, U.S.N.—Electrical torpedoes.—Torpedo detecter.—Military telegraphy and telephony.—Electricity for firing great guns.—Arrangement of wires for lights.—The search light.—Incandescent lamps for sight signaling.—Electrical launches.—An "electric sight".] |
| [Meucci's Claims to the Telephone.—With description of his instrument and 10 figures.] |
| [An Electric Centrifugal Machine for Laboratories.—By ALEX. WATT.—From paper read before the British Association.—1 figure.] |
| [Transmission of Power by Electricity.—Experiments of M. MARCEL DEPREZ.] |
| IV. | [ART AND ARCHITECTURE.—Quadriga for the New House of Parliament at Vienna.—An engraving.] |
| [Glazed Ware Finial.—With engraving.] |
| [Hotel de Ville, St. Quentin.—With engraving.] |
| [Fire Doors in Mills.—From a lecture before the Franklin Institute by C.J. HEXAMER.] |
| V. | [NATURAL HISTORY, ETC.—Preservation of Insects.] |
| [An Accomplished Parrot.] |
| [The Roscoff Zoological Laboratory.—The buildings and rooms.—The aquarium.—Course of study.] |
| [The Murænæ at the Berlin Aquarium.—With engraving.] |
| [Metamorphosis of Arctic Insects.] |
| VI. | [MEDICINE. ETC.—A Year's Scientific Progress in Nervous and Mental Diseases.—By Prof. L.A. MERRIAM.—Report to the Nebraska State Medical Society.] |
| [Scaring the Baby Out.] |
| VII. | [ MISCELLANEOUS.—Wage Earners and their Houses.—Manufacturers as landlords.—Experiments of Pullman, Owen, Peabody, and others.] |
| [ The Locked and Corded Box Trick, with Directions for making the Box.—By D B. ADAMSON.—9 figures.] |
| [A Perpetual Calendar.—With engraving.] |
