rivers, although they did not appear to become larger, as objects seen through a telescope do. I saw any special thing that I fixed my sight upon, such as a town or a tract of country, with perfect clearness and distinctness. [Sidenote: The soul clothed in a new body.] When I reached this ringed world I found myself clothed in a form like that of its inhabitants. It appeared that my soul had attracted to itself the constituent atoms of a new body. Living bodies on the Earth are composed of molecules which do not touch one another, and which are constantly renewed by respiration, by nutrition, and by assimilation. The envelope of the soul is formed more quickly in that far-off world. I felt myself more alive than the supernatural beings whose passions and sorrows Dante celebrates. One of the special faculties of this new world is that of seeing very far. QUÆRENS. But pardon a rather simple remark. Is it not likely that the worlds or planets that revolve round each star must mingle in a distant view with their central sun; for instance, when you see our Sun from afar with the planets of his system, is it possible for you to distinguish our Earth amongst them? [Sidenote: The soul's powers of vision.] LUMEN. You have raised the single geometrical objection which seems to contradict all previous experience. In point of fact, at a certain distance the planets are absorbed in their suns, and our terrestrial eyes would have difficulty in distinguishing them. You know that from Saturn the Earth is invisible. But you must remember that this discrepancy arises as much from the imperfection of our sight as from the geometrical law of the decrease of surfaces. Now, in the world on which I had just landed, the inhabitants are not incarnated in a gross form, as we are here below, but are free beings, and endowed with eminently powerful faculties of perception. They can, as I have told you, _isolate_ the source of light from the object lighted, and, moreover, they can perceive distinctly details which at that distance would be absolutely hidden from the eyes of those dwelling upon this Earth. QUÆRENS. Do they make use, then, of instruments superior to our telescopes? LUMEN. Well, if, in order to realise this marvellous faculty, you find it easier to suppose that they possess such instruments, you may do so, in theory. Imagine a telescope which, by a succession of lenses and an arrangement of diaphragms, brings near in succession these distant worlds, and isolates each one in the field of view in order to study it separately. I should also inform you that these beings are endowed with a special sense by which they can regulate at will the powers of their marvellous organs of sight.