Feature

Two Germs May Cause Blindness of Trachoma

First Glances at New Books

Serum Made Safe for Even Protein-Sensitive Patients

Front Matter

Heavy 1931 Seismic Record Brings 31 Quakes in 3 Months

American Diet Lacks Vitamins despite Nutrition Publicity

Invention Makes Electricity Directly from Sunlight

[Photograph]: Holy City of Ancient Peru

Huge Egyptian Sarcophagus Found by Americans

Paschal Flowers Blossom on Prairies of the West

200,000,000 Bushels of Wheat to Come from Russia

Nature Ramblings: Penguins