Feature

First Glances at New Books

New Clock Correct to 1-500 Second in 24 Hours

Seeks Federal Aid for Crippled Children

Mexican Villages Where None but Children See

New Diesel Racer Will Run 1200 Miles without Refueling

Mental Hygiene Centers Would Save Thousands of Dollars

Rats Used to Measure Danger from Penetrating Gamma Rays

[Photograph]: Walk into My Parlor?

Cost of Coal Is Reduced by Safety Measures in Mines

Foggiest Spot of U. S. A. Brightened up in 1930

Front Matter

Gulf Stream Writes Own Temperature Record