Feature

Bats Shiver for Warmth; Wing Blood Cools Them

[Photograph]: New Blind-Flying Goggles

New Machines and Gadgets

Oil Tankers Important to Merchant Fleet

Dam to Generate More Power for Southwest

Baseball Club Owner Patents Vending Machine

New Hemophilic Disease

Engineers to Learn Soviet Air Strength

Books of the Week

Jupiter Now Visible

Electron Microscopy Speeded by New Devices

X-Disease of Cattle