Scientific American Supplement, No. 620

Scientific American Supplement

The Project Gutenberg EBook of Scientific American Supplement, No.
620,
November 19,1887, by Various This eBook is for the use of anyone
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Title: Scientific American Supplement, No. 620, November 19,1887
Author: Various
Release Date: July 24, 2005 [EBook #16354]
Language: English
Character set encoding: ISO-8859-1
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[Illustration]

SCIENTIFIC AMERICAN SUPPLEMENT NO. 620

NEW YORK, NOVEMBER 18, 1997
Scientific American Supplement. Vol. XXIV., No. 620.
Scientific American established 1845
Scientific American Supplement, $5 a year.
Scientific American and Supplement, $7 a year.
* * * * *

TABLE OF CONTENTS.
I. ARCHITECTURE--Bristol Cathedral--The history and description of
this ancient building, with large illustration.--1 illustration. 9904
II. BIOGRAPHY--Oliver Evans and the Steam Engine.--The work of
this early pioneer, hitherto but slightly recognized at his true worth as
an inventor. 9896
III. CHEMISTRY--The Chemistry of the Cotton Fiber--By Dr.
BOWMAN--An interesting investigation, showing the variation in
composition in different cottons. 9909
Synthesis of Styrolene. 9910
Notes on Saccharin. 9910
Alcohol and Turpentine. 9910
IV. ENGINEERING--Auguste's Endless Stone Saw--A valuable
improvement, introducing the principle of the band saw, and producing
a horizontal cut--10 illustrations. 9896
V. ELECTRICITY.--A Current Meter--The Jehl & Rupp meter for
electricity described--1 illustration. 9903

Mix & Genest's Microphone Telephone--The new telephone recently
adopted by the imperial post office department of Germany--3
illustrations. 9902
Storage Batteries for Electric Locomotion--By A. RECKENZAUN--A
valuable paper on this subject, giving historical facts and working
figures of expense, etc. 9903
The Telemeter System--By R.F. UPTON--The system of Ö.L. Clarke,
of New York, as described before the British Association--A valuable
tribute to an American inventor--1 illustration. 9900
VI. METALLURGY.--The Newbery-Vautin Chlorination Process--A
new process of extracting gold from its ores, with details of the
management of the process and apparatus--1 illustration. 9907
VII. MISCELLANEOUS.--A Gigantic Load of Lumber--The largest
barge load of lumber ever shipped--The barge Wahnapitæ and her
appearance as loaded at Duluth--1 illustration. 9907
Apparatus for Exercising the Muscles--An appliance for use by invalids
requiring to exercise atrophied limbs--1 illustration. 9908
Practical Education.--A plea for the support of manual training schools.
9906
Waves--The subject of ocean waves fully treated--An interesting
resume of our present knowledge of this phenomenon of fluids. 9906
VIII. NAVAL ENGINEERING--The New Spanish Armored Cruiser
Reina Regente.--Illustration and full description of this recent addition
to the Spanish navy.--1 illustration. 9895
The Spanish Torpedo Boat Azor--Illustration and note of speed, etc., of
this new vessel--1 illustration. 9895
IX. OPHTHALMOLOGY--The Bull Optometer--An apparatus for
testing the eyesight.--The invention of Dr George J. Bull.--3

illustrations. 9908
X. SANITATION AND HYGIENE--The Sanitation of Towns--By J.
GORDON, C.E.--A presidential address before the Leicester meeting
of the Society of Municipal and Sanitary Engineers and Surveyors of
England. 9909
XI. TECHNOLOGY--A New Monster Revolving Black Ash Furnace
and the Work Done with It--By WATSON SMITH--The great furnace
of the Widnes Alkali Company described, with results and features of
its working--4 illustrations. 9900
Apparatus Used for Making Alcohol for Hospital Use during the Civil
War between the States--By CHARLES K. GALLAGHER--A curiosity
of war times described and illustrated.--1 illustration. 9900
Confederate Apparatus for Manufacturing Saltpeter for Ammunition
--By CHARLES K. GALLAGHER--Primitive process for extracting
saltpeter from earth and other material--1 illustration. 9900
Electrolysis and Refining of Sugar--A method of bleaching sugar said
to be due to ozone produced by electric currents acting on the
solution--1 illustration. 9903
Improvements in the Manufacture of Portland Cement--By
FREDERICK RANSOME, A.I.C.E.--An important paper recently read
before the British Association, giving the last and most advanced
methods of manufacture. 9901
Roburite, the New Explosive--Practical tests of this substance, with
special application to coal mining. 9897
The Mechanical Reeling of Silk.--An advanced method of treating silk
cocoons, designed to dispense with the old hand winding of the raw
silk.--3 illustrations. 9898
* * * * *

THE SPANISH TORPEDO BOAT AZOR.
[Illustration: THE SPANISH TORPEDO BOAT AZOR.]
The Azor was built by Yarrow & Co., London, is of the larger class,
having a displacement of 120 tons, and is one of the fastest boats afloat.
Her speed is 24½ miles per hour. She has two tubes for launching
torpedoes and three rapid firing Nordenfelt guns. She lately arrived in
Santander, Spain, after the very rapid passage of forty hours from
England.
* * * * *

THE NEW SPANISH ARMORED CRUISER REINA REGENTE.

[Illustration: THE NEW SPANISH ARMORED CRUISER REINA
REGENTE.]
The new armored cruiser Reina Regente, which has been built and
engined by Messrs. James & George Thomson, of Clydebank, for