quadrupled at 16,000, and so on—the Sun's attraction, which was not perceptibly affected by differences so small in proportion to his vast distance of 95,000,000 miles, became a more and more important element in the total gravity. If, as I calculated, I had by 19h. attained a distance from the earth of 160,000 miles, the attractions of Earth and Sun were by that time pretty nearly equal; and hence the phenomenon which had so puzzled me, that the gravitation, as indicated by the barycrite, was exactly double that which, bearing in mind the Earth's attraction alone, I had calculated. From this point forward the Sun's attraction was the factor which mainly caused such weight as still existed; a change of position which, doubling my distance from the Earth, reduced her influence to one-fourth, not perceptibly affecting that of a body four hundred times more remote. A short calculation showed that, this fact borne in mind, the indication of the barycrite substantially agreed with that of the discometer, and that I was in fact very nearly where I supposed, that is, a little farther than the Moon's farthest distance from the Earth. It did not follow that I had crossed the orbit of the Moon; and if I had, she was at that time too far off to exercise a serious influence on my course. I adjusted the helm and betook myself to rest, the second day of my journey having already commenced. CHAPTER III - THE UNTRAVELLED DEEP. Rising at 5h., I observed a drooping in the leaves of my garden, and especially of the larger shrubs and plants, for which I was not wholly unprepared, but which might entail some inconvenience if, failing altogether, they should cease to absorb the gases generated from buried waste, to consume which they had been planted. Besides this, I should, of course, lose the opportunity of transplanting them to Mars, though I had more hope of acclimatising seedlings raised from the seed I carried with me than plants which had actually begun their life on the surface of the Earth. The failure I ascribed naturally to the known connection between the action of gravity and the circulation of the sap; though, as I had experienced no analogous inconvenience in my own person, I had hoped that this would not seriously affect vegetation. I was afraid to try the effect of more liberal watering, the more so that already the congelation of moisture upon the glasses from the internal air, dry as the latter had been kept, was a sensible annoyance—an annoyance which would have become an insuperable trouble had I not taken so much pains, by directing the thermic currents upon the walls, to keep the internal temperature, in so far as comfort would permit—it had now fallen to 4° C.—as near as possible to that of the inner surface of the walls and windows. A careful use of the thermometer indicated that the metallic surface of the former was now nearly zero C., or 32° F. The inner surface of the windows was somewhat