The Project Gutenberg EBook of Scientific American Supplement, No. 492,
June 6, 1885, by Various
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Title: Scientific American Supplement, No. 492, June 6, 1885
Author: Various
Release Date: June 2, 2004 [EBook #12490]
Language: English
Character set encoding: ASCII
*** START OF THIS PROJECT GUTENBERG EBOOK SCIENTIFIC AMERICAN ***
Produced by Don Kretz, Juliet Sutherland, Charles Franks and the DP Team
[Illustration]
SCIENTIFIC AMERICAN SUPPLEMENT NO. 492
NEW YORK, JUNE 6, 1885.
Scientific American Supplement. Vol. XIX, No. 492.
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 New Spanish Artillery.--2
engravings.
Qualitative Tests for Steel Rails.--By L. TETMAJER.
A New Form of Small Bessemer Plant.--By A. TRAPPEN.
Triple Compound Engines.--A paper read by A.E. SEATON
before the Institution of Naval Architects.
Early History of the Steam Jack.
Bridge over the River Adige, at Verona.--13 figures.
Pumping Machinery.--Mine pumps.--Direct acting steam pumps.
By E.D. LEAVITT.
Improved Gun Pressure Gauge.--2 figures.
Measuring the Thickness of Boiler Plates.
On an Express Engine.
II. TECHNOLOGY.--Improved Plaiting Machine.--With engraving.
Self-acting Shuttle Guard.--1 figure.
Ruler and Triangle for Hatching.
The Distillation of Sea Water.--1 figure.
Aids to Correct Exposure on Photographic Plates.--An
interesting paper by W. GOODMAN.
Isochromatic Photography.--By FRED. E. IVES.--2 figures.
Distortion from Expansion of the Paper in Photography.
III. ELECTRICITY, ETC.--On the Fritts Selenium Cells and
Batteries.--A paper read before the American Association
by C.E. FRITTS.
Electricity Applied to the Manufacture of Varnish.--2 figures.
Naglo Brothers' Telephone System.--3 figures.
The Gerard Electric Lamp.--1 figure.
A New Reflecting Galvano
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