The Project Gutenberg EBook of Scientific American Supplement, No. 794,
March 21, 1891, by Various

This eBook is for the use of anyone anywhere at no cost and with
almost no restrictions whatsoever. You may copy it, give it away or
re-use it under the terms of the Project Gutenberg License included
with this eBook or online at www.gutenberg.net

Title: Scientific American Supplement, No. 794, March 21, 1891

Author: Various

Release Date: April 25, 2005 [EBook #15708]

Language: English

Character set encoding: ASCII

*** START OF THIS PROJECT GUTENBERG EBOOK SCIENTIFIC AMERICAN ***

Produced by Juliet Sutherland and the Online Distributed Proofreading
Team at www.pgdp.net.

[Illustration]

SCIENTIFIC AMERICAN SUPPLEMENT NO. 794

NEW YORK, March 21, 1891

Scientific American Supplement. Vol. XXXI., No. 794.

Scientific American established 1845

Scientific American Supplement, $5 a year.

Scientific American and Supplement, $7 a year.

* * * * *

TABLE OF CONTENTS

I. BOTANY.--New Race of Dwarf Dahlias.--A new and valuable
flowering plant, with portrait of the introducer.--1 illustration.

II. CHEMISTRY.--Carbon in Organic Substances.--By J. MESSINGER.--
An improved method of determining carbon by inorganic
combustions.--1 illustration.

III. CIVIL ENGINEERING.--A New Integrator.--By Prof. KARL
PEARSON. M.A.--An apparatus for use for the engineer in working
up areas, indicator diagrams, etc.--4 illustrations.

Best Diameter of Car Wheels.--The size of car wheels from the
standpoint of American engineering.--A plea for a moderate sized
wheel.

Improved Overhead Steam Traveling Crane.--A crane constructed
for use in steel works.--Great power and range.--3 illustrations.

Some Hints on Spiking Track.--A most practical article for telling
exactly how to conduct the operation on the ground.--1 illustration.

IV. ELECTRICITY.--Electrical Laboratory for Amateurs.--By GEO.
M. HOPKINS.--A simple collection of apparatus for conducting a
complete series of electrical experiments.--17 illustrations.

The Action of the Silent Discharge on Chlorine.--How an electric
discharge affects chlorine gas.--An important negative result.

V. ETHNOLOGY.--Some Winnebago Arts.--An interesting article
upon the arts of the Winnebago Indi