The Vibrations of Telephone Diaphragms—II
An Experimental Investigation
Features
Electrolysis from Stray Currents—I
Damage Caused to Underground Structures
The Eighth International Congress of Applied Chemistry
A Survey of Some of the Principal Papers Presented
Local Irrigation in Egypt
Primitive Methods that Persist to the Present Day
Some Physiological Considerations in Lighting Problems
The Ideal System would be a Combination of Direct and Indirect Lighting
Blue Gelatine-Copper
Brilliant Colors from the Colloidal Metal
A Simple Method for Purifying Drinking Water
Oil-Mixed Portland Cement Concrete
Residual Petroleum for Waterproofing Structures
The Research Corporation
An Experiment in Public Administration of Patent Rights
