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How the Redwoods Marched around the Pacific

900,000 Volt Tube Heralds Artificial Radium Rays

Explores with Wheeled Boat

Honorary Hopi

Queen’s Tomb Found at Ur

To Aid Cornstalk Use

Watercress Has Vitamines

Classics of Science: The Mutation Theory

“Radio” Aids Cancerous Mice

Healthiest Year on Record

To Measure Sun’s Distance

Radio Photos across U. S.