| TABLE OF CONTENTS. |
|---|
| I. | [ENGINEERING AND MECHANICS--Dry Air RefrigeratingMachine. 5 figures. Plan, elevation, and diagrams of a new Englishdry air refrigerator] |
| [Thomas' Improved Steam Wheel. 1 figure] |
| [The American Society of Civil Engineers. Addressof President Francis, at the Thirteenth Annual Convention, atMontreal. The Water Power of the United States, and itsUtilization] |
| II. | [TECHNOLOGY AND CHEMISTRY.--Alcohol in Nature. Itspresence in earth, atmosphere, and water. 6 figures. Distillatoryapparatus and (magnified) iodoform crystals from snow water, fromrain water, from vegetable mould, etc.] |
| [Detection of Alcohol in Transparent Soaps. By H.JAY] |
| [On the Calorific Power of Fuel, and on Thompson'sCalorimeter. By J.W. THOMAS] |
| [Explosion as an Unknown Fire Hazard. A suggestivereview of the conditions of explosions, with curiousexamples] |
| [Carbon. Symbol C. Combining weight. 12. By T. A.POOLEY Second article on elementary chemistry written forbrewers] |
| [Manufacture of Soaps and their Production. By W.J. MENZIES] |
| [The Preparation of Perfume Pomades. 1 figure."Ensoufflage" apparatus for perfumes] |
| [Organic Matter in Sea Water] |
| [Bacteria Life. Influence of heat and variousgases and chemical compounds on bacteria life] |
| [On the Composition of Elephant's Milk. By Dr.CHAS. A. DOREMUS. Comparison of elephant's milk with that of tenother mammals] |
| [The Chemical Composition of Rice. Maize, andBarley. By J. STEINER] |
| [Petroleum Oils. Character and properties of thevarious distillates of crude petroleum. Fire risks attending theuse of the lighter petroleum oils] |
| [Composition of the Petroleum of the Caucasus. ByP. SCHULZENBERGER and N. TONINE] |
| [Notes on Cananga Oil. or Ilang-Ilang Oil. By F.A. FLÜCKIGER. 1 figure. Flower and leaf of Canangaodorata] |
| [Chian Turpentine, and the Tree which Produces It.By Dr. STIEPOWICH. of Chios, Turkey] |
| [On the Change of Volume which Accompanies theGalvanic Deposition of a Metal. By M. E. BOUTY] |
| [Analysis of the Rice Soils of Burmah. By R.ROMANIC, Chemical Examiner, British Burmah] |
| III. | [PHYSICS AND PHYSICAL APPARATUS.--Seyfferth'sPyrometer. 7 figures.--Pyrometer with electric indicator.--Methodof mounting by means of a cone on vacuum apparatus.--Mounting bymeans of a sleeve.--Mounting by means of a thread on a tube.--Mounting by means of a clasp in reservoirs.--The pyrometer mountedon a bone-black furnace.--Mounted on a brick furnace] |
| [Delicate Scientific Instruments. By EDGAR L.LARKIN. An interesting description of the more powerful anddelicate instruments of research used by modern scientists andtheir marvelous results] |
| [The Future Development of Electrical Appliances.Lecture by Prof. J. W. PERRY before the London Society ofArts.--Methods and units of electrical measurements] |
| [Researches on the Radiant Matter of Crookes andthe Mechanical Theory of Electricity. By Dr. W. F. GINTL] |
| [Economy of the Electric Light. W. H. PREECE'SExperiments Investigations] |
| [On the Space Protected by a Lightning Conductor.By WM. H. PREECE.--5 figures] |
| [Photo-Electricity of Fluor Spar Crystals] |
| [The Aurora Borealis and Telegraph Cables] |
| [The Photographic Image: What It Is. By T. H.MORTON. 1 figure.--Section of sensitive plate after exposure andduring development] |
| [Gelatine Transparencies for the Lantern] |
| [An Integrating Machine. By C. V. BOYS.--1figure] |
| [Upon a Modification of Wheatstone's Microphoneand its Applicability to Radiophonic Researches. By ALEX. GRAHAMBELL,--2 figures] |
| IV. | [ARCHITECTURE.--Suggestions in Architecture, 1figure.--A pair of English cottages. By A. CAWSTON] |
