Volume 108, Issue 22
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Features
A Hydraulic Variable Speed Gear
A Power Transmission Mechanism Consisting of a Pump and Engine Couple
Dussaud's "Cold Light"
Its Remarkable Applications
Plans for the Disposal of New York's Sewage
A Treatment Plant on an Artificial Island Three Miles Offshore
Recent Assaults Upon the Patent System: What they Mean to Manufacturers, The Current Supplement
The Brazilian Battleship "Rio de Janeiro", Cork Paper and its Uses
A New Parseval Airship, The Good Roads Movement and more
Mending a Broken Steel Tape
Jig for Turning up Rough-threaded Bolts
Rig for a Two-handed Saw
How to Measure Closely with Ordinary Calipers
A Toolholder for Grindstones
Two Drilling Kinks
Hint for Boring a Straight Hole
Device for Holding Screws when Filing them Shorter
An Automobile Field Kitchen, Tar Bonded Roads in Cincinnati
By Our Berlin Correspondent