SEVERAL investigators have unsuccessfully searched for Hα emission from the planet Jupiter 1–3. In December 1967, Schwitters 4 obtained a spectrogram of Jupiter containing one feature in the Hα line ...

A FEW days ago Dr. King and I announced the discovery of an isotope of carbon, mass 13, appearing in the λ4737 Swan band of neutral C 2. Since then, have found this isotope in two additional sources, ...