Features
Apparatus for the Sterilization of Water by means of Ozone
History of the Standard Weights and Measures of the United States
Early Maps
Reservoir, Fountain, and Stylographic Pens.—I
Ancient Writing Implements
A Rational Process for Obtaining Ammonia and Sal-Ammoniac by the Utilization of Residuary and Waste Products
Lightning Conductors on the Washington Monument
The Mixing of Concrete
The Modern Telephone Switchboard
Valuable Alloys.—II
Birmingham Platinum
The Brake-Shoe Problem
Heat Recovery and Intermediate Superheating for Steam Turbines
The History of the Marine Turbine
From the “turbinia” of 1894 to the “cab mania” of 1905.
