Feature

Rich Cattle Land Found in Colombia

New Machines and Gadgets

Front Matter

Race Haters Unbalanced

Mining Made Easier with Shaped Charges

[Photograph]: Man from Mars?

Great Circle Route

Malaria from Transfusion

U. S. Makes Manganese

Automatic Phonograph Holds Records Upright

Judges Named for Science Writing Award

Streamlined Luxury Liners