Three-Color Photometry of 56 ARIETIS.

The spectrum variable, 56 Arietis, was observed photometrically in three colors to examine whether the variations in light are stable and, if so, to determine an accurate period. Comparison with similar observations made ten years earlier by Provin shows that the amplitudes and shapes of the light-curves have remained substantially unaltered. The period has been established to be 0.7278925 day.