SCIENTIFIC AMERICAN SUPPLEMENT NO. 344

NEW YORK, August 5, 1882

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. ByMANUEL EISSLER. I.--Historical notes.--Spanish Discoveries inCentral America.--Early explorations.--Nicaragua projects.--Panamarailway, etc.
	Improved Averaging Machine.
	Compound Beam Engine. 4 figures.--Borsig'simproved compound beam engine.
	Power Hammers with Movable Fulcrum.--By DANIELLONGWORTH. 5 figures.
	The Bicheroux System of Furnaces Applied to thePuddling of Iron. 2 figures.
	Gessner's Continuous Cloth Pressing Machine. 3figures.
	Novelties in Ring Spindles. 4 figures.
	Improvements in Woolen Carding Engines.
II.	NATURAL HISTORY.--Metamorphosis of the Deer'sAntlers.--Annual changes. 9 figures.
	Monkeys. By A.R. WALLACE.--Comparison ofskeletons of man, orang outang, and chimpanzee.--Other anatomicalresemblances and diversities.--The different kinds of monkeys andthe countries they inhabit.--American monkeys.--Lemurs.--Distribution, affinities, and zoological rank ofmonkeys.
	Silk Producing Bombyces and other Lepidopterareared in 1881. By ALFRED WAILLY, Member Lauriat de la Societed'Acclimatation de France.--An extended and important European,Asiatic, and American silk worms, and other silkproducers.
III.	MINERALOGY, METALLURGY, ETC.--The MineralogicalLocalities In and Around New York City and the Minerals OccurringTherein.--By NELSON H. DARTON.--Chances for collecting within onehour's ride of New York.--Methods of collecting andtesting.--Localities on Bergen Hill.--The WeehawkenTunnel.--Minerals and modes ofoccurrence.--Calcite.--Natrolite.--Pectolite.--Datholite.--Apopholite.--Phrenite.--Iron and copper pyrites.--Stilbite.--Laumonite.--Heulandite.
	Antiseptics.
	Crystallization and its Effects Upon Iron. ByN.B. WOOD.-- Beauty of Crystals.--Nature ofcohesion.--Cleavage.--Growth of crystals.--Some largecrystals.--Cast iron.--Influence of phosphorus and sulphur.--Natureof steel.--Burnt steel.--Effect of annealing.
IV.	ARCHITECTURE, ART, ETC.--The Cathedral of Burgos,Spain. --Full page illustration from p ... BU KİTABI OKUMAK İÇİN ÜYE OLUN VEYA GİRİŞ YAPIN! Sitemize Üyelik ÜCRETSİZDİR!