| TABLE OF CONTENTS. |
|---|
| I. | [BIOGRAPHY.—George W. Whistler, C.E.—ByProfessor G.L. VOSE.—Full biography of the eminent railroadengineer.] |
| II. | [CHEMISTRY.—A Newly Discovered Substance inUrine.—A substance possessing greater reducing power thangrape sugar found in diabetic urine.] |
| [On Electro Dissolution and its Use as RegardsAnalysis.—By H. N. WARREN, researchanalyst.—Interesting decomposition of cast iron withproduction of boron and silicon; experiments with other metals.] |
| III. | [ELECTRICITY.—No Electricity from theCondensation of Vapor.—Note on Herr S. Kalischer'sconclusions.] |
| [On Nickel Plating.—By THOMAS T.P. BRUCEWARREN.—Notes on this industry, and suggested improvement forprocuring a bright coat.] |
| [The Electro-Magnetic TelephoneTransmitter.—New theory of the telephone's action.] |
| IV. | [ENGINEERING.—Fuel and Smoke.—By Prof.OLIVER LODGE.—The second and concluding one of theseimportant lectures.] |
| [Gas Engine for Use on Railroads.—Theapplication of six horse power Koerting gas engine to a dummylocomotive.—1 illustration.] |
| [New Gas Holder at Erdberg.—The largest gasholder out of England.—3 illustrations.] |
| [Tar for Firing Retorts.—Simple arrangementadapted for use in ordinary gas retort benches; resultsattained.—1 illustration.] |
| [The Anti-Friction Conveyer.—An improvementon the screw of Archimedes; an apparatus of wonderful simplicityand efficacy in the moving of grain.—2 illustrations.] |
| [The Retiro Viaduct.—Combined iron and stoneviaduct over the river Retiro, Brazil.—5 illustrations.] |
| [Western North Carolina Location over the BlueRidge.—Interesting instance of railroad topography.—1illustration.] |
| V. | [METALLURGY.—Chilled Cast Iron.—Thevarious uses of this product; adaptability of American iron for itsapplication.] |
| VI. | [MISCELLANEOUS.—Coal in the ArgentineRepublic.—Note.] |
| [History of the World's PostalService.—Conclusion of this interesting article.—Theservice in Germany, China. Russia, and elsewhere.—10illustrations.] |
| [Snow Hall—The new science and naturalhistory building of the University of Kansas.] |
| VII. | [NAVAL ENGINEERING.—Improvement in LayingOut Frames of Vessels.—The Frame Placer.—By GUSTAVESONNENBURG.—Ingenious apparatus for use in shipyards.—1 illustration.] |
| [Sea-going Torpedo Boats.—The inutility ofsmall torpedo boats at sea.—The construction of larger onesdiscussed.] |
| VIII. | [ORDNANCE.—Firing Trial of the 110½Ton B.L. Elswick Gun. Full dimensions of this piece and itprojectiles.—Results of proof firing.—9illustrations.] |
| IX. | [PHOTOGRAPHY.—Experiments in ToningGelatino-Chloride Paper.—Trials of ten different gold toningbaths, formulas, and results.] |
| [Printing Lantern Pictures by Artificial Light onBromide Plates from Various Sizes.—By A. PUMPHREY.—Theprocessor producing smaller or larger transparencies fromnegatives.—1 illustration.] |
| X. | [PHYSICS.—A New Mercury Pump.—Simpleair pump for high vacua.—1 illustration.] |
| [The Laws of the Absorption of Light inCrystals.—By H. BECQUEREL.] |
| [Varying Cylindrical Lens.—By TEMPESTANDERSON, M.D., B. Sc.—Combination of two conoidallenses.—Range of power obtained.] |
| XI. | [PHYSIOLOGY.—Elimination ofPoisons.—Treatment of poison cases by establishment of astrong diuresis. The Filtration and the SecretionTheories.—Experiments on the action of and secretions of thekidneys.] |
| XII. | [TECHNOLOGY.—Furnace for DecomposingChloride of Magnesium.—Furnace with rotating chamber for useby alkali manufacturers.—1 illustration.] |
| [Notes on Garment Dyeing.—The production ofblacks on silk and wool.—Formulas for mordants.] |
| [Studies in Pyrotechny.—II. Methods ofIllumination.—Continuation of this valuable treatise.—9illustrations.] |
| [The "Sensim" Preparing Box.—New machine fortreatment of fiber.—An improvement on the ordinary gillbox.—3 illustrations.] |
