Feature

Many New Radioisotopes

Early Indians Had Modern Troubles

Errata, Vol. 49, Nos. 1-26, January-June, 1946

Mercury Appears Again

200-Foot Chimney Aids in Study of Smoke Nuisance

Susceptibility to Tooth Decay May Be Inherited

“T-13” Keeps down Lint, Dust and Bacteria

Nature Ramblings

Front Matter

Radioactive “Tracers”

Vaccine for Streptococcal Infections a Possibility

New World Health Plan