Feature

Front Matter

Key to Riddle of Anemia Found

Mayans Knew Tricks of Perspective

Serum-Fed Calves Safe from Disease

Substandard Ergot May Be Harmless

1,500,000,000 Years of Life Portrayed in Great Hall of Paintings

In Various Science Fields

Crushes Steel

Safe Mooring for Dirigible

New Comet

Oxford Child Godmother to Pluto

Microbes Have Invisible Stage