It is the general opinion of Astronomers that the Moon is inhabited. Though we cannot hope by any increase of telescopic power, within the limits of probablity, to see inhabitants on the Moon, it is not unreasonable to suppose that their works may be seen. . . . Professor Gruithausen, of Munich, declares that he has discovered, by his large telescope, cities, fortifications, roads and other artificial works, erected by the inhabitants of the Moon. . . . When we reflect upon the magnitude of the Moon, and the vast population it is capable of sustaining, it does not seem probable that the Creator would erect such a world, and abandon it to solitude.