The radial velocities measured on 215 spectrograms taken on sixteen nights confirm Walker's photoelectric period of 0.0788650 day. The mean velocity of the star is - 21 9 km/sec. There is a beat period of 0.3751 day. The total range of the principal oscillation is 9.2 km/sec; that of the interfering oscillation is 2.6 km/sec. The period of the interfering oscillation is 0 06516 or 0.09986 day. The spectrum is approximately Fl IV-V. The maximum brightness occurs halfway on the descending branch of the velocity- curve. Near minimum radial velocity a narrow space of continuous spectrum is visible between Ca H and HE. This feature is absent at other phases.