Photoelectric observations of the eclipsing binary DM Per.

1212 photoelectric observations of the eclipsing variable DM Per, made at the Observatory of Torino with a yellow filter = 5150 A), are presented. Some remarkable features of the lightcurve are confirmed; the most persistent one is the standstill at the end of the primary minimum from phase 0.083 to 0.100. In spite of the distortion of the lightcurve outside eclipse, we tried to deduce the geometric elements of the system with the method of Russell and Merrill. The agreement with the previously deduced values is good. Key words: eclipsing binary - photometry