SA Supplements

The White Star Steamer Teutonic

New Method of Ventilating Tunnels

The Power of Water, or Hydraulics Simplified

Lieut. Fiske's Position Finder

Machine for Manufacturing Paper Bags

A New Modification of the Open Hearth Steel Process

Howitzer Experiments

The Electromagnet

An Electric Snow Sweeper

Roman Remains Unearthed at Silchester

Astronomical Probabilities for the Coming Decade

The Phylloxera and American Resistant Stocks

The Foussa, a Strange Animal

Coral Growths on Submarine Cables

Summary of Meteorological Observations at New York City during the Year 1890

Remarkable Case of Skin Grafting

How the Pathogenic Bacteria do their Harm

The Age of Trees for Transplanting

Uses of Selenium

The American Chemical Society

Building Plans and Specifications

Useful Engineering Books

Obtaining Oxygen from the Air

Patents- February 7, 1891