Kepler. A noted ray-centre. It is surrounded by an extensive halo, especially well developed on the E., across the Mare Procellarum.
Bessarion. Two bright craters: the more northerly is prominently light-surrounded, while its companion is less conspicuously so.
Aristarchus.—The most conspicuous bright centre on the moon, the origin of a complicated ray-system.
Delisle. S. of this formation there is a tolerably bright spot on the site of some hills.
Timaeus. A ray-centre.
Euler. Feeble halo with streaks.
Galileo. Between this and Reiner is a curious bright formation with short rays, referred to in the Catalogue, under Reiner.
Cavalerius. A light streak originating in the W. wall, and extending on to the Oceanus Procellarum.
Olbers. A considerable ray-system, but seldom distinctly visible.
Lichtenberg. Faintly light-surrounded.