Feature

First Glances at New Books

In Science Fields

Specific Heats and Atomic Weights: “A Classic of Science”

[Photograph]: Most Powerful X-Ray Tube for Medical Use

[Photograph]: Changes Light to Electricity

Star Observed for First Time as Disc, Not Point of Light

Synthetic Lubricating Oil Made out of Paraffin Wax

Leukemia Disease of Blood Combated by Rabbit Serum

Serum Made Safe for Even Protein-Sensitive Patients

Front Matter

Rheumatism Vaccine Promised by Minnesota Experiments

New Photoelectric Sunmotor Discussed by Its Inventor