Feature

Map Shows Sixty Dialects of Mexico

Front Matter

Frogs Reared in Dye Become Albinos

British Dry-Dock Could Handle 100,000 Ton Vessel

Crop Limitation Saved Colonial Tobacco Planters

“Boat Tail” Bullets Improved for Use in American Weapons

Consider the Size of the Smallest Living Things

Year’s Second Eclipse Is Far Distant

New Determination Sets Greatest Solar Heat

Nature Ramblings: Pretty Corn

Roosevelt Appoints Science Advisory Board

Decade’s White Plague War Adds Year to Average Life