SA Supplements

July 1881

Volume 12, Issue 291supp

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Features

H.M.S. Polyphemus

The Polyphemus

The Canal System of New York

Introduction

The Bollee Steam Carriage

Annular Wheels

Forms of Epicycloidal and Involute Teeth for Inside Gear—Failure of the Odontographs to Meet Certain Practical Cases

C. W. MacCord

The Old Aqueducts of Paris

Farquhar's Filtering Apparatus

Suggestions about Stuffing Cushions

Heat in Relation to Chemical Action

Henry Allen

A Simple Equatorial

Voss's Induction Electrical Machine

Hylozoic Materialism

Robert Lewins

The Pressure of Wind

Theory of Thermo Electric Motive Forces

M. Pilleur

The Chemical and Physical Effects of Fillings Upon Teeth

Charles Mayr

On Harvesting Machinery

E. Samuelson

Rheumatism

M. P. Geeensword

Modification of Anesthetic Methods

To Keep Very Shaded Places Green

Ensilage

Saddle Horses

Natural History of Butterflies

Jottings about Snakes

Fossil Saiga-Antelopes

Land Snails

Cane Sugar from Molasses

U. Gayon

Tanning

K. Sadlow