SCIENTIFIC AMERICAN SUPPLEMENT NO. 531

NEW YORK, MARCH 6, 1886

Scientific American Supplement. Vol. XXI, No. 531.

Scientific American established 1845

Scientific American Supplement, $5 a year.

Scientific American and Supplement, $7 a year.


TABLE OF CONTENTS.
I.[CHEMISTRY AND METALLURGY.--Annatto.-Analyses ofthe same.--By WM. LAWSON]
[Aluminum.--By J.A. PRICE.--Iron the basis ofcivilization.-- Aluminum the metal of the future.--Discovery ofaluminum.--Art of obtaining the metal.--Uses andpossibilities]
II.[ENGINEERING AND MECHANICS.--The Use of Iron inFortification. --Armor-plated casements.--The Schumann-Grusonchilled iron cupola.--Mougin's rolled iron cupola.--With full pageof engravings]
[High Speed on the Ocean]
[Sibley College Lectures.--Principles and Methodsof Balancing Forces developed in Moving Bodies.--Momentum andcentrifugal force.--By CHAS.T. PORTER.--3 figures]
[Compressed Air Power Schemes.--By J.STURGEON.--Several figures]
[The Berthon Collapsible Canoe.--2engravings]
[The Fiftieth Anniversary of the Opening of theFirst German Steam Railroad.--With full page engraving]
[Improved Coal Elevator.--With engraving]
III.[TECHNOLOGY.--Steel-making Ladles.--4figures]
[Water Gas.--The relative value of water gas andother gases as Iron-reducing Agents.--By B.H.THWAITE.--Experiments.--With tables and 1 figure]
[Japanese Rice Wine and Soja Sauce.--Method ofmaking]
IV.[ELECTRICITY, MICROSCOPY, ETC.-Apparatus fordemonstrating that Electricity develops only on the Surface ofConductors.--1 figure]
[The Colson Telephone.--3 engravings]
[The Meldometer.--An apparatus for determining themelting points of minerals]
[Touch Transmission by Electricity in theEducation of Deaf Mutes.--By S. TEFFT WALKER.--With 1figure]
V.[HORTICULTURE.--Candelabra Cactus and theCalifornia Woodpecker.--By C.F. HOLDER.--With 2 engravings]
[How Plants are reproduced.--By C.E. STUART.--Apaper read before the Chemists' Assistants' Association]
VI.[MISCELLANEOUS--The Origin of Meteorites.--With 1figure]