Feature

Science Seen as Aiding Totality of Human Advance

White Man Smokes Often, Red Man Smokes Hard

First Glances at New Books

Front Matter

Man-Made Radioactivity Achieved at Pasadena

Injections Lengthen Life of Tuberculous Rabbits

Plants Retain Heavy Water in Formation of Tissues

Lost History Sought in Mosque of St. Sophia

Winter Tornadoes Rare but Causes Are “Orthodox”

Baby Rabbits Born Normally after Fertilizing in Glass

South Sea Wood May Reveal Life of Ancients

Chilean Mountains Shaken by Earthquake