| TABLE OF CONTENTS. |
|---|
| I. | [ENGINEERING AND MECHANICS--Recent Improvements inTextile Machinery.--Harris's revolving ring spinning frame.-- Newelectric stop motion.--New positive motion loom. 6figures.] |
| [Spinning Without a Mule.--Harris's improvements inring spinning.] |
| [New Binding Machines. 3 figures.] |
| [Flumes and their construction. 1 figure.] |
| [Chuwab's Rolling Mill for Dressing and RoundingBar Iron. 9 figures.] |
| [Burning of Town Refuse at Leeds. 6figures.--Sections and elevations of destructor andcarbonizer.] |
| II. | [TECHNOLOGY AND CHEMISTRY.--Friedrich Wohler.--Hislabors and discoveries.] |
| [New Gas Burner. 3 figures.--Grimstone's improvedgas burner.] |
| [Defty's Improvements in Gas Burners and Heaters. 4figures.] |
| [The Collotype in Practice.] |
| [Determination of Potassa in Manures.--By M. E.DREYFUS.] |
| III. | [HYGIENE, MEDICINE, ETC.--The Air in Relation toHealth. By Prof. C. F. CHANDLER.] |
| [The Plantain as a Styptic.] |
| [Bacteria.] |
| IV. | [ELECTRICITY, ETC.--Gustavo Trouvé and hisElectrical Inventions. --Portrait of GustaveTrouvé.--Trouvé's electric boat competing in theregatta at Troyes.] |
| [Domestic Electricity.--Loiseau's electric naphthaand gas lighters.--Ranque's new form of lighter withextinguisher.] |
| [Theiler's Telephone Receiver. 2 figures.] |
| [An Electric Power Hammer. By MARCEL DEPRETZ. 1figure.] |
| [Solignac's New Electric Lamp. 3 figures.] |
| [Mondos's Electric Lamp. 2 figures.] |
| V. | [METALLURGY AND MINERALOGY.--Aluminum.--Itsproperties, cost, and uses.] |
| [The Origin and Relations of the Carbon Minerals.By J.S. NEWBERRY.--An elaborate and extremely valuable review ofthe genesis of carbon minerals, and the modes and conditions oftheir occurrence.] |
| [Estimation of Sulphur in Iron and Steel. ByGEORGE CRAIG. 1 figure.] |
| VI. | [ARCHITECTURE, ETC.--The Armitage House.] |
| [Suggestions in Architecture.--An English countryresidence.] |
| VII. | [BOTANY, HORTICULTURE, ETC.--The Soy Bean. 1figure.-- The Soy bean (Soja hispida).] |
| [Erica Cavendishiana. 1 figure.] |
| [Philesia Buxifolia. 1 figure.] |
| [Mahogany.] |
| VIII. | [MISCELLANEOUS.--Our Hebrew Population.] |
| [The Mysteries of Lake Baikal.] |
| [Traveling Sand Hills on Lake Ontario.] |
| [Animals in the Arts.--Corals.--The conchshell.--Living beetles, etc.--Pearls.--Sepia and silk.] |
