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Moon “Rays” May Be Mirrors of Volcanic Ash

Pituitary Gland Is Nature’s Sculptor, Molding Human Face

Germans Probe Old City Named in Book of Genesis

Isolation of Pure Vitamin A Near

Front Matter

Element 93 Discovery Is Now Confirmed by American

[Photograph]: Classes in the Air

Oldest Americans Trailed by Tools Found on Campus

Dr. Frank R. Lillie Heads Both Academy and N. R. C.

Monkey Swinging on Trapeze Aids in Study of Brain

Find Profiles in Tibet like Buffalo Nickel Indian

Scientists Reach Agreement on Cosmic Ray Problems