SA Supplements

Hotchkiss Machine Revolving Cannon

Gaseous Illuminants

Condensation of Carbon Particles in Smoke

The Power of Water, or Hydraulics Simplified

Origin of the Steam Engine and of the Utilization of Solar Heat

The Miramichi Fire of 1825

The London, Ohio, Water Supply System

Electricity in Transitu; from Plenum to Vacuum

William Crookes, F.R.S.

Simple Device for Connecting up Batteries

Phenomena of Alternating Currents of Very High Frequency

Urquharts Battery

The Edison-Lalande Battery

Powerful Plunge Battery

Gassner's Dry Battery

The Giant Ant—Eater

Lalande-Chaperon Cell

Bisulphate of Mercury Cell

Hussey Bluestone Battery

Hydrastis Vs. Phthisis

Patents- March 7, 1891