The Art of Time Ensemble and Canadian Stage At the Berkeley Street Theatre in Toronto on Tuesday John Locke writes of a blind man who after much study announced that the colour red, which he had never ...

PROF. ROBERTSON'S observation 1 of a maximum at 2212 A. in the spectrum of an arc between cadmium electrodes which is much more intense than the cadmium band at 2125 is very interesting. This ...

IN a recent article on the above subject, S. Winston Cram 1 has reported his inability to obtain, either in fluorescence or by excitation with a Tesla coil, a narrow diffuse cadmium band at 2212. He ...