Photoelectric magnitudes in some of the Harvard E regions

. Photoelectric magnitudes and colors are given for stars in Harvard Standard Regions E 4, 5, 6, 7, 8, and 9 and C 10. From stars observed in common, corrections are given to reduce these observations to the 1953 Cape system. For the blue magnitudes and the colors, the color equation is non-linear at the blue end. Conversions to the international system are given.