Feature

Poisons Produce Hereditary Changes in Sex Cells

Raman Effect Found Different in Heavy Water

Erratum: Milk Seen as Constant Source of Vitamins

Unemployed Engineers Begin Aerial Mapping

Bison Blood Being Bred out of Wisent Hybrids

Crack in Earth Indicated by Radioactive Water

Polarized Light Aids Observations at Sea

Marco Polo Tales Become Fact through Research into History

Erratum: Waltz Time Preferred to Foxtrot Rhythm

Erratum: New York to Have Third Planetarium

Erratum: 1933 Bad Grasshopper Year, Entomologists Report

First Glances at New Books