Feature

Nature Ramblings: Bird Migrations

Front Matter

Calf Experiments Show Scanty Diet Possible

Noses Get “New Look” with Tantalum Mesh

[Photograph]: New Weapon

Efficient Heat Pumps

Polio Protection Pill

Atom Cannon Has Double Recoil Mechanism

Hail as Flying Hazard

Medical Whodunnit Solved

New Transforming Device

[Photograph]: Sets Record