The Project Gutenberg EBook of Scientific American Supplement, No. 446,
July 19, 1884, by Various

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Title: Scientific American Supplement, No. 446, July 19, 1884

Author: Various

Release Date: March 1, 2004 [EBook #11385]

Language: English

Character set encoding: ASCII

*** START OF THIS PROJECT GUTENBERG EBOOK SCIENTIFIC AMERICAN SUPP. 446 ***

Produced by Jon Niehof, Don Kretz, Juliet Sutherland, Charles Franks
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[Illustration]

SCIENTIFIC AMERICAN SUPPLEMENT NO. 446

NEW YORK, JULY 19, 1884

Scientific American Supplement. Vol. XVIII, No. 446.

Scientific American established 1845

Scientific American Supplement, $5 a year.

Scientific American and Supplement, $7 a year.

* * * * *

TABLE OF CONTENTS

I. CHEMISTRY.--Tin in Canned Foods.--By Prof. ATTFIELU.--Small
amount of tin found.--Whence come these small particles.--No
cause for alarm.

II. ENGINEERING AND MECHANICS.--The Windmill.--By JAMES
W. HILL.--The Eclipse wind.--Other wind mills.--Their operation,
use, etc.

The Pneumatic Dynamite Gun.--With engraving of pneumatic
dynamite gun torpedo vessel.

Rope Pulley Friction Brake.--3 figures.

Wire Rope Towage.--Treating of the system of towage by hauling
in a submerged wire rope as used on the River Rhine, boats
employed, etc.--With engraving of wire rope tug boat.

Improved Hay Rope Machine.--With engraving.

The Anglesea Bridge, Cork.--With engraving.

Portable Railways.--By M DECAUVILLE.--Narrow gauge roads
in Great Britain.--M. Decauvilie's system.--Railways used at the
Panama Canal, in Tunis, etc.

III. TECHNOLOGY.--Improved Pneumatic Filtering Presses, and the
Processes in which they are employed.--2 engravings.

Pneumatic Malting.

A New Form of Gas Washer.--Manner in which it is used.--By
A. BANDSEPT.--2 figures.

IV. ELECTRICITY, HEAT, ETC.--Gerard's Alternating Current
Machine.--2 engravings.

Automatic Fast Speed Telegraphy.--By THEO. F. TAYLOR.--Speed
determined by resistance and static capacity.--Exper