Feature

New Machines and Gadgets

Facsimile Transmission

Cheap Gasoline from Coal

Detect False Deafness

Benadryl Treats Paralysis

Two Lamb Crops Yearly through Sex Hormone Use

Back Matter

Ray Origin in Crab Nebula

Front Matter

College for Rich and Poor

Judgment Influenced by Likes and Dislikes

Census Shows Many Kinds of Crabs in This World