Feature

Keeping Cool in Hot Weather

Fish Spins on Tail over Sea Surface

New U. S. Submarine’s Hull Joined Together by Welding

Experiments Cast Doubt on Orthodox Forest Creed

Front Matter

Synthetic Waves May Tell How to Save Coasts

Unpleasant Smell of Rubber May Be Eliminated

Mapping of Nation Speeded by Public Works Allotment

Nature Ramblings: Chalcis Fly

Exposition Visitors Examined for New Racial Type

Thyroid Removal Gives Relief to Heart Disease Sufferers

World Energy Estimates Quell Fears for Future of Mankind