transparent side windows of our cabin impossible. I was indisposed for meditation, which could have been directed to no other subject than the mysterious purpose of our journey, and had not provided myself with books. But in Eveena's company it was impossible that the time should pass slowly or wearily.
In this balloon journey I had a specially advantageous opportunity of observing the two moons—velnaa, as they are called. Cavelna, or Caulna, the nearer, in diameter about 8′ or a little more than one-fourth that of our Moon, is a tolerably brilliant object, about 5000 miles from the surface. Moving, like all planets and satellites, from west to east, it completes its stellar revolution and its phases in less than seven and a half hours; the contrary revolution of the skies prolongs its circuit around the planet to a period of ten hours. Zeelna (Zevelna) returns to the same celestial meridian in thirty hours; but as in this time the starry vault has completed about a rotation and a quarter in the opposite direction, it takes nearly five days to reappear on the same horizon. It is about 3′ in diameter, and about 12,000 miles from the surface. The result of the combined motions is that the two moons, to the eye, seem to move in opposite directions. When we rose above the mists, Caulna was visible as a very fine crescent in the west; Zeelna was rising in the east, and almost full; but hardly a more brilliant object than Venus when seen to most advantage from Earth. Both moved so rapidly among the stars that their celestial change of place was apparent from minute to minute. But, as regarded our own position, the appearance was as opposite as their direction. Zeelna, travers-
