Volume 24, Issue 612supp
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Features
Steel Railway Sleeper
The Elevated Railroads of New York
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
Chinese Plank Sawing
The Self-Registering Tide Gauge of R. Fuess
Temperature Indicator for Machines
Centrifugal Extractors
Photographing a Bullet in Flight
Photo-Engraving Processes
The “Wash-Out” Process
Progress of Metallurgy in 1886
The Jubilee of the Telegraph
Potting the Strawberry
Printing by Electricity
Musical Bells
Dr. Corning's System of Administering Cocaine in Painful Nervous Affections
The Parietal Eye in Fishes
Spencer Fullerton Baird
How to make an Incubator
Some Important Discoveries in the Life- History of the Hop Plant Louse
(Phorodon humuli, Schrank)