Volume 65, Issue 1687supp
You are currently logged out. Please sign in to download the issue PDF.
Features
Alcohol and Gasoline Compared
Tests Made by the United States Geological Survey
The Utilization of Meerschaum Waste
Elements of Electrical Engineering.—XVI
Alternating Current Motors. Part 2
Wood Paving
The Photography of Color.—II
A History of Photographic Color Research and its Present Status
Mud-Binding Grasses
The First Weather Plant Observatory
A Novel English Experiment
Interrelations of the Elements
A Summary of Recent Radioactive Investigations
The Production of Smoke
With Suggestions as to its Preveention
Thrift in America
Steel Power Transmission Poles
A New Type of Pole for High Voltages
The Conservation of our Natural Resources
New Method of Concrete Construction
A Novel Way of Building Small Dwellings
The Latest Work on the Solar Parallax
Progress Made in a Colossal Task
Formation of Mineral Veins—I
Analysis of Rocfis and the Metals Extracted from Them