Feature

New Machines and Gadgets

Nature Ramblings: Wasting Wet Acres

Front Matter

Gage Bones’ Elasticity

New Allergy Remedy

Oil Cooler for Jets Uses Many Aluminum Tubes

Size of New Cast Iron Not Altered by Heat

Rare Fish Species Added to U.S. Museum Collection

Space and Stars Are Same

[Photograph]: Beetle vs. the Snail

Allopolyploid Redwood

Harness Water Power