Loeb's Respirators

The Elevated Railroads of New York

Steel Railway Sleeper

Hydraulic Governor Brake

The Raising of Bauer's Submarine Boat

The Gas Balance: An Apparatus for the Automatic Determination of the Specific Gravity and Composition of Gas

Temperature Indicator for Machines

The Self-Registering Tide Gauge of R. Fuess

Chinese Plank Sawing

Centrifugal Extractors

Photographing a Bullet in Flight

Photo-Engraving Processes

The “Wash-Out” Process

Progress of Metallurgy in 1886

The Jubilee of the Telegraph

Printing by Electricity

Musical Bells

Potting the Strawberry

Dr. Corning's System of Administering Cocaine in Painful Nervous Affections

Spencer Fullerton Baird

The Parietal Eye in Fishes

Some Important Discoveries in the Life- History of the Hop Plant Louse

(Phorodon humuli, Schrank)

How to make an Incubator

Building Plans and Specifications