Page:Popular Science Monthly Volume 58.djvu/22

14 that the individual stars do not fall far below the limit of visibility, several being of about the seventh magnitude.

Another notable cluster of the same general nature is that in Perseus. This constellation is situated in the Milky Way, not far from its region of nearest approach to the pole. In the figure of the constellation the cluster forms the handle of the hero's sword. It may be seen



in the evening during almost any season except summer. To the naked eye it seems more diffused and star-like than Præepe; in fact, it has two distinct centers of condensation, so that it may be considered as a double cluster.

The two clusters last described may be resolved into stars with the smallest telescopes. But in the case of most of these objects the