The Hubner Carding Engine, and the Modifications that have been Introduced into It

Radii of Curvature Geometrically Determined

Grindstones

Resonating Gongs

The Lafitte Process of Welding Metals

Improvements in the Manufacture of Gas

On the Progress and Development of Marine Engineering

The Stampede Pass Tunnel on the Northern Pacific

The Fastest Seaboat in Existence

Wire Stitching Machine

The “Trompe,” or Hydraulic Blower

Economical Quay Walls

Absolute Electrometer for Measuring very High Potentials

The Philosophy of Soaring Birds

Another Electric Launch

Capillary Attraction

Colors of Metals and Alloys

Soap Bubbles

A Method of Separating the Two Isomeric Toluidine-Sulphonic Acids

Alkaline Chromates

Liquid Carbonic Acid

Sulphuric Acid in Refined Petroleum and Distillate

Nitrates and Nitrites in Waters and Artificial Solutions

Why some People Grow Fat

Carbohydrate and Fatty Foods

Coral Fishing

French Pointers

Comets and Meteors

Earthquake Recorders for use in Observatories

Barefoot Horses