Volume 125, Issue 6
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Features
Depth-Bombing from the Air
Results and Lessons of the Sinking of the Frankfurt and Ostfriesland Off the Virginia Coast
Dead Men's Fingers
One of the Most Interesting Groups of Our Less Common Fungous Growths
Where Oil Occurs
A Brief Description of the Rocks and Sands in Which Petroleum Is Found
The Red Sea Dollar
How a Trade Coin of More Than a Century's Standing Is Being Retired
The Last Word in Power Houses, The World's Largest Watch and more
Some of the Remarkable Features of the New Delaware Station That Typify Present-Day Practice