Feature

Front Matter

Injected Sex Hormones Influence Glands of Embryos

Dog, Hero of Research, Honored by Monument

Genes Have Double Function: Vital as Well as Hereditary

New Comet Found during Search for Minor Planets

Cancer Experts Warn against Hope from Lead Treatment

[Photograph]: Commemorating a Congress

Thin Aluminum Foil Highly Efficient as Heat Insulator

Effects of X-Raying Show in Later Generations

Government Aid Demanded for Research in Pure Science

Government Chemist Less Optimistic on Ocean Gold

Nature Ramblings: More Water than Dust