SA Supplements

A Proposed War Balloon

Engineering Progress in 1884

English and French Armor-Clad Ships

Triple Ships

American Dredgers and Excavators

Improved Calculating Machine

On the Purification of Water by Iron on a Large Scale

The Preparation of Hyposulphurous Acid, and its use in the Developer for Dry Plates

The American Oil and Gas Fields

Slate Roof Coverings

New Mode of Building Sustaining Walls

The Hooping of the Dome of St. Peter's, Rome

A New Fire Alarm

Jablochkoff's Auto-Accumulator

Gime's Accumulator

The Forms of Vibrating Bodies

On the Conversion of Heat into useful Work

The Treatment of Cholera

Oranges in Palestine

Treatment of Neuralgia by Neuber's Method

Patents - July 18, 1885