SA Supplements

September 1880

Volume 10, Issue 246supp

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Features

The Photophone

New Torpedo Vessel

Our Immigrants and Where they Go

An American Catamaran in London

Improved Moulding Machine

The Old Horse Mill

Recent Brake Trials

Gutta Percha in Telegraphy

W. H. Preece

The Port of Antwerp

Washburn Mill “A,” Minneapolis, Minn

Mosquitoes as a Stimulant to Reproduction

Whymper's Second Ascent of Chimborazo

The Influence of Age Upon the Intellect

What is a Zenana?

Murray Mitchell

New Measurement of the Velocity of Light

On Currents Produced by Friction Between Conducting Substances, and on a New Form of Telephone Receiver

Improvements in the Production of the Electric Light

F. H. Varley

Phthisis

The New Relation Between Light and Electricity Discovered by Dr. Kerr

W. C. Rontgen

Acute Rheumatism Treated by Hot Washing-Soda Baths

Tuberculosis as an Infectious Disease

Callender's Method of Treating Abscess

The Manufacture of Cinchona Products

The Structure of Spermatozoa

On the Reduction of Chloride of Gold by Hydrogen in the Presence of Platinum

D. Tommasi

Parasites in Muscle in Typhoid Fever

Rapid Breathing as a Pain Obtunder

Detection and Determination of Oils

M. A. Remont

Improvements in the Production of Ammonia

Processes for Purifying Oils With Alkalies

M. Blondeau

The Fourth State of Matter—A Refutation

Analysis of Various American Tinned Food Products

G. W. Wigner

On the Extraction of Iodine from Seaweeds

Thiercelin

Zinc in Spring Waters

E. Mylius

Annual Meeting of the American Association of Science

Artificial Indigo

Pittacal

A New Method for Determining the Value of Zinc Powder

V. Drewsen

The Problem of Life

“Azo” Dyes

Lightning Bugs

Oak Galls

Friction of Lubricating Oils

Practical Apiculture

A German Corded Poodle

Felidæ in Captivity

The Percheron Horse

Atmospheric Bacteria

P. Miquel

How to Make Trout Ponds

Phylloxera in California

Valuable Grasses of New Zealand

The Bean-Faba Vulgaris

Louisa Reed Stowell