NEW YORK, August 5, 1882
Reading edition
Scientific American Supplement. Vol. XIV, No. 344.
Scientific American established 1845
Scientific American Supplement, $5 a year.
Scientific American and Supplement, $7 a year.
TABLE OF CONTENTS.
I. ENGINEERING AND MECHANICS.--The Panama Canal. By MANUEL EISSLER. I.--Historical notes.--Spanish Discoveries in Central America.--Early explorations.--Nicaragua projects.--Panama railway, etc.
Improved Averaging Machine.
Compound Beam Engine. 4 figures.--Borsig's improved compound beam engine.
Power Hammers with Movable Fulcrum.--By DANIEL LONGWORTH. 5 figures.
The Bicheroux System of Furnaces Applied to the Puddling of Iron. 2 figures.
Gessner's Continuous Cloth Pressing Machine. 3 figures.
Novelties in Ring Spindles. 4 figures.
Improvements in Woolen Carding Engines.
II. NATURAL HISTORY.--Metamorphosis of the Deer's Antlers.--Annual changes. 9 figures.
Monkeys. By A.R. WALLACE.--Comparison of skeletons of man, orang outang, and chimpanzee.--Other anatomical resemblances and diversities.--The different kinds of monkeys and the countries they inhabit.--American monkeys.--Lemurs. --Distribution, affinities, and zoological rank of monkeys.
Silk Producing Bombyces and other Lepidoptera reared in 1881. By ALFRED WAILLY, Member Lauriat de la Societe d'Acclimatation de France.--An extended and important European, Asiatic, and American silk worms, and other silk producers.
III. MINERALOGY, METALLURGY, ETC.--The Mineralogical Localities In and Around New York City and the Minerals Occurring Therein.--By NELSON H. DARTON.--Chances for collecting within one hour's ride of New York.--Methods of collecting and testing.--Localities on Bergen Hill.--The Weehawken Tunnel.--Minerals and modes of occurrence.--Calcite.--Natrolite.--Pectolite.--Datholite. --Apopholite.--Phrenite.--Iron and copper pyrites. --Stilbite.--Laumonite.--Heulandite.
Antiseptics.
Crystallization and its Effects Upon Iron. By N.B. WOOD.-- Beauty of Crystals.--Nature of cohesion.--Cleavage.--Growth of crystals.--Some large crystals.--Cast iron.--Influence of phosphorus and sulphur.--Nature of steel.--Burnt steel.--Effect of annealing.
IV. ARCHITECTURE, ART, ETC.--The Cathedral of Burgos, Spain. --Full page illustration from photograph.
Description of Burgos Cathedral.
Photo-Engraving on Zinc and Copper. By LEON VIDAL.
Meridian Line.--A surveyor's method of finding the true meridian.--By R.W. MCFARLAND.
V. ELECTRICITY, ETC.--Electro Mania. By W. MATTIEU WILLIAMS.--Example of electrical exaggeration and delusion.--Early scientific attempts at electro-motors, electric lamps, etc.
Action of Magnets Upon the Voltaic Arc. By TH. DU MONCEL. 2 figures.
Volckmar's Secondary Batteries.