| TABLE OF CONTENTS. |
|---|
| | PAGE. |
| I. | [BIOGRAPHY.—The New Statue of Philip Lebon.—Biography of the French pioneer inventor of gas lighting, with notes on the recent inauguration of his statue.—1 illustration.] | 9757 |
| II. | [CHEMISTRY.—The Analysis of Urine.—An elaborate investigation of the method of analyzing chemically and microscopically this fluid, with illustrations of the apparatus employed.—4 illustrations] | 9758 |
| III. | [ELECTRICITY.—Electrical Alarm for Pharmacists.—An apparatus for indicating to the pharmacist when he removes from the shelf a bottle containing poison.—2 illustrations.] | 9753 |
| [ Electric Steel Railways.—By George W. Mansfield.—A full discussion of the problem of electric railways; comparison with horse and cable traction.] | 9752 |
| IV. | [ENGINEERING.—Improved Oscillating Hydraulic Motor.—A small motor for household use, as for driving sewing machines and other domestic machinery.—8 illustrations.] | 9751 |
| [ The Ceara Harbor Works.—A remarkable engineering work now in progress in Brazil; the formation of an artificial harbor.—4 illustrations.] | 9752 |
| V. | [GEOLOGY.—Notes of a Recent Visit to Some of the Petroleum-Producing Territories of the United States and Canada.—By Boverton Redwood, F.I.C., F.C.S.—The second portion of this valuable paper, treating more particularly of Canadian petroleum.] | 9765 |
| VI. | [METEOROLOGY.—The "Meteorologiske Institut" at Upsala, and Cloud Measurements.—The methods used and results attained in the famous Upsala observatory under Profs. Ekholm and Hagström; the measurement of clouds.—1 illustration.] | 9764 |
| VII. | [MISCELLANEOUS.—Drawing Instrument for Accurate Work.—By J. Lehrke.—A magnifying instrument for fine work and measurements.—2 illustrations.] | 9754 |
| [ Liquid and Gaseous Rings.—Notes on the production of vortex rings.—The different aspects and breaking up of smoke rings.—6 illustrations.] | 9760 |
| [ Scenes among the Extinct Volcanoes of Rhineland.—The picturesque features of the geological formations of this region described.—10 illustrations.] | 9762 |
| [ Shall We Have a National Horse?—An eloquent plea by Randolph Huntington for the production of a good type of animal.—Use of the Arabian horse as an improver of the breed.] | 9760 |
| VIII. | [NAVAL ENGINEERING.—Trial Trip of the Ohio.—The remarkable results attained by the introduction of new boilers and machinery in an American steamship.] | 9751 |
| IX. | [PHYSIOLOGY.—Apparatus for Determining Mechanically the Reaction Period of Hearing.—An interesting study of the time of transmission of an impulse through the sensor and motor nerves.—1 illustration.] | 9753 |
| X. | [SANITATION.—A New Disinfector.—Description of a new apparatus for disinfecting by superheated steam and air, with tabular statement of elaborate tests made with it.—2 illustrations.] | 9754 |
| [ Trees from a Sanitary Aspect.—By Charles Roberts, F.R.C.S., etc.—The sanitary value of trees considered by this eminent sanitarian.—The uses and abuses of shade near houses.] | 9765 |
| XI. | [TECHNOLOGY.—A New Alkali Process.—The Parnell & Simpson process of making carbonate of soda, combining the features of the Leblanc and ammonia methods.] | 9755 |
| [ A New Process for the Distillation and Concentration of Chemical Liquids.—By George Anderson, of London.—An apparatus and process especially adapted to the manufacture of sulphate of ammonia.—The invention of Alex. Angus Croll described.—1 illustration.] | 9757 |
| [ Barlow's Machine for Moulding Candles.—A new apparatus for candle manufacture, fully described and illustrated.—5 illustrations.] | 9754 |
| [ Temperature of Gas Distillation.—The mooted question discussed by Mr. Wm. Foulis, the eminent gas engineer.] | 9756 |
| [ The Largest Black Ash Furnace in the World.—Note of a recent furnace for use in the Leblanc process of soda manufacture.] | 9756 |
