Feature

Nature Ramblings: Hitch-Hikers

Induction Heating Used in Metal Coating

Machine Counts Worn Paper Currency

Books of the Week

Middle-Sized Eggs Needed

New Machines and Gadgets

Front Matter

Quantum Theory Not Final

Diet Aids Mentally Ill

Automatic Machine Output Influenced by Operator

Skewers for Broken Bones

[Photograph]: Through the Periscope