An Unprecedentedly Large Piece of Fine Mechanism

The Skeleton Talks

Bones of Skeleton Give Amazing Data; Tell Age, Race, Sex, Stature, and so on; Study Is Important in Anthropology, Archeology, and Criminology

The Japanese Navy at a Glance

The 200-inch Telescope

A Progress Report, Two Years to Go, The Big Moving Mechanism Weighing a Million Pounds Has the Precision Characteristics of a Fine Watch

Helium—Hope of the Airship

Commercial Quantities Produced Only In United States . . . Safer, More Economical Lifting Gas than Hydrogen . . . Stringent Sales Regulations

Diffuse Nebulae

The New Struve Wide-Slit Spectrograph Permits the Observation of the Faint Galactic Nebulae

Scales of Industry

Do More Than Weigh . . . Manufacturing Processes Automatically Controlled . . . Quantity and Quality Checked . . . Saving Time, Material, and Labor Costs

Properties of Matter Under High Pressure

Unfamiliar Effects Produced by Pressures Up to More than Half a Million Pounds per Square Inch. Ice that Melts Only at 376 Degrees, Fahrenheit