Volume 121, Issue 12
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Features
Jack Frost in the Orange Country
The Organization and Methods by Which California Growers Have Routed an Old Enemy
High-Lights of Air-Travel
Some of the Things Seen from a Plane That Contradict Experience Gained on the Ground
Secrets of Antiquity
An Ancient Bronze Revived for Modern Service
The Self-Sinking Concrete Pile
How Jets of Water Are Used to Bore the Hole and Relieve the Pressure Upon the Descending Sides
Our Technical Achievements in the Great War--VIII
How the Physician and the Surgeon Mitigated the Horrors of War
Making the Desert Bloom in Australia
An Irrigation Scheme on the Island Continent That Involves Big Construction Work
The Naturalist's Corner
Wild Life Conservation All Over the World