Feature

Polio Cases Jump 70%

Chiggers Do Not Burrow but Attack as Ticks Do

Fire Weather Forecasts

Boom in Requests for Educational TV Channels

Scientific Jelly Making

Front Matter

Rubber Lifeboat Insures 70-Degree Temperature

New British Jet Engine Is World’s Most Powerful

Party Line Difficulties

Death Valley Lowest in Western Hemisphere

Buried Block Reveals Moisture Content of Soil

Air Force on Ice Island