Feature

Sudden Thunderstorms Trouble Night Flying

New Earthquake Observatory Is Examined by Scientists

Nebulae Composed of Gases “A Classic of Science”

Harmless Relative Fights Germ of Syphilis to Cure Paresis

Mysterious Mexican Blindness Is Traced to Turkey Gnat

Moon Found to Have Influence on California Earthquakes

Front Matter

Earliest Americans Hunted Ice Age Beasts with Stone Darts

European Wisent Crossed with American Buffalo

New Slow Electron Compass Points East Instead of North

New Seismograph Records Earthquakes beneath It

Difficulty in Birth May Cause Dullness