Feature

Injections by Spray Gun

Instrument Measures Vertical Wind Velocity

Comet Remains Visible

Front Matter

Tough New Plastic Can Replace Metals

Radiation Fatalities May Be Reduced by Drug

Better Switches Needed

[Photograph]: Hypersonic Shock Tube

Books of the Week

Axicon Optical Devices

Atomic Radiation Makes Rocket Fuel Burn Faster

“FAS” Scores Give Neighborhood Types