Volume 25, Issue 628supp
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Features
Street Pavement—Past, Present, and Future
The Panama Canal
Willis' Speedometer
Economical Illumination from Waste Oils
Bottle Corking Machine
Wool Hat Making
The “Wood” Ammeter and Voltmeter
How to make a Galvanometer
Iodide of Starch
Electric Lighting of the Steamships Victoria and Britannia
Chemical and Allied Industries
Group III.—Destructive Distillation
Robert Koch—His Work and Methods
Measuring Definite Quantities
Apparatus for Fractional Distillation under Reduced Pressure
Laboratory Apparatus for Fractional Distillation
A New Extractor
Dr. Zur Nieden's Portable Hospital or Barracks
Animals Destructive to Submarine Cables
On the Existence of Certain Elements, Together with the Discovery of Platinum, in the Sun
Contributions from the Physical Laboratory of Harvard University