e 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

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 colder, showing that the crystal was more pervious to heat than the walls, with their greater thickness, their outer and inner lining of metal, and massive interior of concrete. I directed a current from the thermogene upon either division of the garden,

n of remark. That a journey so utterly without precedent or parallel, in which so little could be anticipated or provided for, through regions absolutely untraversed and very nearly unknown, should be monotonous, may seem strange. But in truth the novelties of the situation, such as they were, though intensely striking and interesting, were each in turn speedily examined, realised, and, so to speak, exhausted; and this once done, there was no greater occupation to the mind in the continuance of strange than in that of familiar scenery. The infinitude of surrounding blackness, filled as it were with points of light more or less brilliant, when once its effects had been scrutinised, and when nothing more remained to be noted, afforded certainly a more agreeable, but scarcely a more interesting or absorbing, outlook than the dead grey circle of sea, the dead grey hemisphere of cloud, whi

f unbroken slumber. I therefore decided to divide my sleep into two portions of rather more than four hours each, to be taken as a rule after noon and after midnight; or rather, since noon and midnight had no meaning for me, from 12h. to 16h. and from 24h. to 4.h. But of course sleep a

s through which I looked, I cannot speak with certainty upon this point. With a magnifying power of 300 the polar spots of Mars were distinctly visible and perfectly defined. They were, I thought, less white than they appeared from the Earth, but their colour was notably different from that of the planet's general surface, differing almost as widely from the orange hue of what I supposed to be land as from the greyish blue of the water. The orange was, I thought, deeper than it appears through a telescope of similar power on Earth. The seas were distinctly grey rather than blue, especially when, by covering the greater part of the field, I contrived for a moment to observe a sea alone, thus eliminating the effect of contrast. The bands of Jupiter in their turn were more notably distinct; their variety of colour as well as the contrast of light and shade much more definite, and their irregularities more unmistakable. A satellite was approaching the disc, and this afforded me an opportunity of realising with especial clearness the difference between observation through seventy or a hundred miles of terrestrial atmosphere outside the object glass and observation in space. The two discs were perfectly rounded and separately discernible until they touched. Moreover, I was able to distinguish upon one of the darker bands the disc of the satellite itself, while upon a

the inner ring and the planet, with a power of 500, I discerned what appeared to be a dark purplish ring, semi-transparent, so that through it the bright surface of Saturn might be discerned as through a veil. Mercury shone brightly several degrees outside the halo surrounding the

ect upon the atmosphere that produced it, but chiefly to the twilight now brightening on that limb of the Earth's disc; or rather to the fact that a small portion of that part of the Earth's surface, where, if the Sun were not visible, he was but a very little below the horizon, had been turned towards me. I saw through the telescope first a tiny solar crescent of intense brightness, then the halo proper, now exceedingly narrow, and then what looked like a silver terrestrial crescent, but a mere thread, finer and shorter than any that the Moon ever displays even to telescopic observers on Earth; since, when such a minute portion of her illuminated surface is turned towards the Earth, it is utterly extinguished to our eyes by the immediate vicinity of the Sun, as was soon the case with the terrestrial crescent in question. I watched long and with intense interest the gradual change, but I was called away from it by a consideration of no little practical moment. I must now be moving at a rate of nearly, if not quite, 40,000 miles an hour, or about a million miles per diem. It was not my intention, for reasons I shall presently explain, ever greatly to exceed this rate; and if I meant to limit myself to a fixed rate of speed, it was time to diminish the force of the apergic current, as otherwise before its reduc

of meteors clustering densely in some particular part of their orbit; and, unfortunately, I was not likely to solve the problem. Gradually the nebula changed its position, but not its form, seeming to move downwards and towards the stern of my vessel, as if I were passing it without approaching nearer. By the time that I was satisfied of this, hunger and even faintness warned me that I must not delay preparing my breakfast. When I had finished this meal and fulfilled some necessary tasks, practical and arithmetical, the hand of the chronometer indicated the eighth hour of my third day. I turned again somewhat eagerly to the discometer, which showed an apparent distance of 360 terrestrial radii, and consequently a movement which had not materially varied from the rate of 11-1/4 radii per hour. By this time the diameter of the Earth was not larger in appearance than ab

the apergy only to drive me directly outward from the Sun, I should move under the impulse derived from the Earth about 1,600,000 miles a day, or 72 millions of miles in forty-five days, in the direction common to the two planets. The effect of the constantly widening orbit would be much as if the whole motion took place on one midway between those of the Earth and Mars, say 120 millions of miles from the Sun. The arc described on this orbit would be equivalent to 86 millions of miles on that of Mars. The entire arc of his orbit between the point opposite to that occupied by the Earth when I started and the point of opposition-the entire distance I had to gain as measured along his path-was about 116 millions of miles; so that, trusting to the terrestrial impulse alone, I should be some 30 millions behindhand at the critical moment. The apergic force must make up for this loss of ground, while driving me in a direction, so to speak, at right angles with that of the orbit, or along its radius, straight outward from the Sun, forty odd millions of miles in the same time. If I succeeded in this, I should reach the orbit of Mars at the point and at the moment of opposition, and should attain Mars himself. But in this I might fail, and I should then find myself under the sole influence of the Sun's attraction; able indeed to resist it, able gradually to steer in any direction away from it, but hardly able to overtake a planet that should lie far out of my line of advance or retreat, while moving at full speed away from me. In order to secure a chance of retreat, it

these forces to operate with an energy inversely proportionate, not to the distance, but to its square. We had no reason to think that apergy, exempt as it is from this law, would be at all diminished by distance; and this view the rate of acceleration as I rose from the Earth had confirmed, and my entire experience has satisfied me that it is correct. None of our experiments, however, had indicated, or could well indicate, at what rate this force can travel through space; nor had I yet obtained any light upon this point. From the very first the current had been continuous, the only interruption taking place when I was not five hundred miles from the Earth's surface. Over so small a distance as that, the force would move so instantan

for the future I might, and did, reckon on a steady progress of about one and a quarter million miles daily under the apergic force alone-a gain in a line d

iew through the upper lens, but did not obscure in the least the image of the stars which were then visible in the metacompass. I very soon ascertained that the cloudlet consisted, as I had supposed in the former case, of a multitude of points of light less brilliant than the stars, the distance between which became constantly wider, but which for some time were separately so small as to present no disc that any magnifying power at my command could render measurable. In the meantime, the extremities visible through the other windows were constantly widening out till lost in the spangled darkness. By and by, it became impossible with the naked eye to distinguish the individual points from the smaller stars; and shortly after this the nearest began to present discs of appreciable size but somewhat irregular shape. I had now no doubt that I was about to pass through one of those meteoric rings which our most advanced astronomers believe to exist in immense numbers throughout space, and to the Earth's contact with or approach to which they ascribe the showers of falling, stars visible in August and November. Ere long, one after another of these bodies passed rapidly before my sight, at distances varying probably from five yards to five thousand miles

ney-the gradual passage of the Earth off the face of the Sun. For some little time after this the Earth was entirely invisible; but later, looking through the telescope adjusted to the len

equal error in the reckoning of my speed, which had at first been calculated from the Earth's disc, and not from that of the Sun. Hence, continuing my course unchanged, I should arrive at the orbit of Mars some days earlier than intended, and at a point behind that occupied by the planet, and yet farther behind the one I aimed at. Prolonged observation and careful calculation had so fully satisfied me of the necessity of the corrections in question, that I did not hesitate to alter my course accordingly, and to prepare for a descent on the thirty-ninth instead of the forty-first day. I had, of course, to prepare for the descent very long before I should come within the direct influence of the attraction of Mars. This would not prevail over the Sun's attraction till I had come within a little more than 100,000 miles of the surface, and this distance would not allow for material reduction of my speed, even were I at once to direct the whole force of the apergic current against the planet. I estimated that arriving within some two millions of miles of him, with a speed of 45,000 miles per hour, and then directing the whole force of the current in his direction, I should arrive at his surface at a speed nearly equal to that at which I had ascended from the Earth. I knew that I could spare force enough to make up for any miscalculation possible, or at least probable. Of course any serious error might be fatal. I was exposed to two dangers; perhaps to three: but to

hundred to seven hundred miles. In the midst of the principal ocean, but somewhat to the southward, is an island of unique appearance. It is roughly circular, and, as I perceived in descending, stands very high, its table-like summit being some 4000 feet, as I subsequently ascertained, above the sea-level. Its surface, however, was perfectly white-scarcely less brilliant, consequently, than an equal area of the polar icefields. The globe, of course, revolved in some 4-1/ hours of earthly time, and, as I descended, presented successively every part of its surface to my view. I speak of descent, but, of course, I was as yet ascending just as truly as ever, the Sun being visible through the lens in the floor, and reflected upon the mirror of the discometer, while Mars was now seen through the upper lens, and his image received in the mirror of the metacompass. A noteworthy feature in the meteorology of the planet became apparent during the second day of the descent. As magnified by the telescope adjusted to the upper lens, the distinctions of sea and land disappeared from the eastern and western limbs of the planet; indeed, within 15° or an hour of time from either. It was plain, therefore, that those regions in which it was late evening or early morning were hidden from view; and, independently of the whitish light reflected from them, there could be little doubt that the obscuration was due to clouds or mists. Had the whitish light covered the land alone, it might have been attributed to a snowfall, or, perhaps, even to a ve

minute; since if at any point I should find that I had miscalculated my rate of descent, or if any other unforeseen accident should occur, immediate action would be necessary to prevent a shipwreck, which must without doubt be fatal. It was very likely that I should be equally unable to sleep during the first twenty-four hours of my sojourn upon Mars, more especially should he be inhabited, and should my descent be observed. It was, therefore, my policy to land at some point where the Sun was setting, and to enjoy rest during such part of the twelve hours of the Martial night as should not be employed in setting my vessel in order and preparing to evacuate it. I should have to ascertain e

f that white which we consider absolute, and call, as such, snow-white, but which really has in it a very slight preponderance of blue, upon Mars the polar caps are rather cream-white, or of that white, so common in our flowers, which has in it an equally slight tinge of yellow. On the shore, or about twenty miles from the shore of the principal sea to the southward of the equator, and but a few degrees from the equator itself, I perceived at last a point which appeared peculiarly suitable for my descent. A very long range of mountains, apparently having an average height of about 14,000 feet, with some peaks of probably twice or three times that altitude, stretched for several hundred miles along the coast, leaving, however, between it and the actual shore-line an alluvial plain of some twenty to fifty miles across. At the extremity of this range, and quite detached from it, stood an isolated mountain of peculiar form, which, as I exam

nd directly over the mountain in question, within some twelve miles of its summit. This distance I descended in the course of a quarter of an hour, and landed without a