SA Supplements

December 1879

Volume 8, Issue 208supp

You are currently logged out. Please sign in to download the issue PDF.

Features

Central Africa

John O. Means

The Efficiency of Screw Propellers

Fire-Brick and Terra Cotta

Andrew McLean Parker

Heathorn's Steering Gear

Bricklaying in France

Printing Receipts

Comparative View of American Progress

Improved Tanning Process

An Attempt at a Systematic Classification of the Various Forms of Energy

O. J. Lodge

Breaking Horses by Electricity

Coret's Metallic Thermometers

Electric Illumination

M. Tommasi

Reynier's New Incandescent Electric Lamp

Aspergillus in the Living Human Ear

Charles Henry Burnett

Determination of Potassa and Soda in Minerals

W. Knop, J. Hazard

Active Matter of Malt, or Maltin and Diastase

M. Dubrunfaut

Ferric Hydrates

D. Tommasi

Test for Traces of Mercury

Ed. Teuber

Horticultural Notes

A Remarkable Cave in Brazil

Pliocene Man

Charles C. Abbott