Feature

First Glances at New Books

Front Matter

Evidence Obtained That Space between Stars Not Transparent

New Photo Tube Measures Temperature in Furnace

[Photograph]: Bareback

Accepted Theory of Sense of Balance May Be Revised

[Photograph]: Largest of His Time

New Method Measures Speed of Electrons in Dense Solids

Activity of Pituitary Gland Basis of Test for Pregnancy

Industrial Hygiene Urged to Lengthen Adult Life

Famous Old Theorem Solved after Lapse of 300 Years

Orchids That Look like Girls