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Front Matter

“Radio” Aids Cancerous Mice

Ground Glass “Blackboard”

Queen’s Tomb Found at Ur

Nature Ramblings: Ladybird Beetle

Locate Mexican Earthquake

How the Redwoods Marched around the Pacific

First Glances at New Books

Healthiest Year on Record

To Measure Sun’s Distance

Radio Photos across U. S.

35 Sons, No Daughters