Produced by Olaf Voss, Don Kretz, Juliet Sutherland, Charles Franks and the Distributed Proofreaders Team [Illustration] SCIENTIFIC AMERICAN SUPPLEMENT NO. 362 NEW YORK, DECEMBER 9, 1882 Scientific American Supplement. Vol. XIV, No. 362. Scientific American established 1845 Scientific American Supplement, $5 a year. Scientific American and Supplement, $7 a year. * * * * * TABLE OF CONTENTS. I. ENGINEERING AND MECHANICS--Recent Improvements in Textile Machinery.--Harris's revolving ring spinning frame.-- New electric stop motion.--New positive motion loom. 6 figures. Spinning Without a Mule.--Harris's improvements in ring spinning. New Binding Machines. 3 figures. Flumes and their construction. 1 figure. Chuwab's Rolling Mill for Dressing and Rounding Bar Iron. 9 figures. Burning of Town Refuse at Leeds. 6 figures.--Sections and elevations of destructor and carbonizer. II. TECHNOLOGY AND CHEMISTRY.--Friedrich Wohler.--His labors and discoveries. New Gas Burner. 3 figures.--Grimstone's improved gas burner. Defty's Improvements in Gas Burners and Heaters. 4 figures. The Collotype in Practice. Determination of Potassa in Manures.--By M. E. DREYFUS. III. HYGIENE, MEDICINE, ETC.--The Air in Relation to Health. By Prof. C. F. CHANDLER. The Plantain as a Styptic. Bacteria. IV. ELECTRICITY, ETC.--Gustavo Trouvé and his Electrical Inventions. --Portrait of Gustave Trouvé.--Trouvé's electric boat competing in the regatta at Troyes. Domestic Electricity.--Loiseau's electric naphtha and gas lighters.--Ranque's new form of lighter with extinguisher. Theiler's Telephone Receiver. 2 figures. An Electric Power Hammer. By MARCEL DEPRETZ. 1 figure. Solignac's New Electric Lamp. 3 figures. Mondos's Electric Lamp. 2 figures. V. METALLURGY AND MINERALOGY.--Aluminum.--Its properties, cost, and uses. The Origin and Relations of the Carbon Minerals. By J.S. NEWBERRY.--An elaborate and extremely valuable review of the genesis of carbon minerals, and the modes and conditions of their occurrence. Estimation of Sulphur in Iron and Steel. By GEORGE CRAIG. 1 figure. VI. ARCHITECTURE, ETC.--The Armitage House. Suggestions in Architecture.--An English country residence. VII. BOTANY, HORTICULTURE, ETC.--The Soy Bean. 1 figure.-- 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 conch shell.--Living beetles, etc.--Pearls.--Sepia and silk. * * * * * GUSTAVE TROUVÉ.