And Now, The Atlantic
One of the Last Areas to be Conquered By Commercial Air Transport . . . Technical Advances Have Outrun Political and Industrial Plans
Volume 154, Issue 4
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Features
Bridge Builder, Lawyer, Manufacturer: Astronomers
Bone Surgery With Machine Tools
Grafting Bones is Much Like Grafting Trees . . . Bone from Your Own Body . . . Cut with a Circular Saw . . . Shaped on the Spot with a Bone Mill
The Great Serpent Mount In Ohio
Minor Planets—II
Junk To You
A Billion Dollar Industry in Scrap Metals . . . Revolving Resources Save Ore and Coal . . . The "Alloy Age" Has Introduced New Problems
The Amazing Growth In The Use Of Wood Pulp
Trisecting The Impossible
Why the Angle Trisector is Wasting His Time . . . the Problem is Insoluble—Demonstrably So . . . But the Perennial Aspirant Works On and On
Can They Take It?
Amateur Seismology
Half Amateur, Half Professional . . . Constant Battle . . . Listing the Difficulties . . . No Royal Road to this Scientific Hobby . . . Work . . . Work
New Caissons Speed Work
Energy From The Sun
Step by Step Solar Engines Increase in Efficiency . . . May Reach Economical Level as a Power Source