There is very little excuse for such statements, because Professor Lowell has always been careful to point out that the lines represented broad bands of vegetation, and not the width of the ca.n.a.ls.

Now the secret was out! What we actually saw was this: not a single wide ca.n.a.l but a series of comparatively narrow ca.n.a.ls, running parallel to each other, with a very wide strip of vegetation between each. Usually the ca.n.a.ls were linked together in pairs by smaller cross ca.n.a.ls running diagonally from one ca.n.a.l to the other in alternate order. These were the irrigation trenches. Thus from one of a pair of ca.n.a.ls an irrigation trench would branch out at an angle of about fifty degrees, and enter the second ca.n.a.l. Higher up, on the same side, another trench would run from the second ca.n.a.l at a similar angle, and enter the first ca.n.a.l, and so on--_ad infinitum_. In the case of single ca.n.a.ls curved loops branched out and re-entered higher up, these loops being made on either side, and similar loops were made on the outsides of paired ca.n.a.ls.

As a result of this arrangement it did not matter whether the water pa.s.sed up the ca.n.a.l at one season of the year or down it at another season, it could always move straight ahead; the irrigation trenches were thus constantly flushed by one or other of the pairs, and there could be no stagnation anywhere. Merna also told us that some ca.n.a.ls are provided with a network of trenches, whilst others are embanked so that the water can be let out through sluices when necessary, and thus flood the surrounding land. Thus every requirement can be met.

So far from being a hundred miles wide, it was exceptional for the ca.n.a.ls to have a width of more than two hundred yards. Most of those we were looking at were only about sixty feet wide! and only the wider ones are used for navigation purposes. Merna explained why this was so, saying that as the main use of the ca.n.a.ls was for irrigation purposes very wide ones were not required; for not only would they be wasteful, but as it was necessary to force the water along by artificial means, it could more conveniently be accomplished in the case of narrow ca.n.a.ls, as the wider the ca.n.a.l the more difficult it became to force the water along.

We also observed many splendid wide motor-roads running between the single ca.n.a.ls, as well as others running straight across the system, being carried over the ca.n.a.ls by the most beautiful and fairy-like bridges that we had ever seen. They were all constructed of a metal identical with our "martalium," which we had used in the construction of the _Areonal_; so that was undoubtedly another invention which we owed to Martian influences transmitted to us across s.p.a.ce!

Nothing more beautiful or graceful than these bridges could be imagined, so light were they in construction, so elegant and varied in design, and every part shining in the sun like burnished silver; they looked like structures composed of rays of light rather than substantial metal! They were a perfect dream of beauty, and we stood a long time examining their elegant construction through our gla.s.ses.

"Well," remarked John, "some of our millionaires would give half their fortunes to have such lovely bridges as these in their private parks!"

"Heh, mon!" replied M'Allister, "it's very clear the Martians could teach our engineers something about bridge-building, if nothing else!"

"Wait and see our water-lifting and water-propelling machinery," said Merna; "I think that will be something which will suit you as an engineer!"

I noticed that many of the lines were apparently groves of trees, and asked Merna whether they were ca.n.a.ls or not.

"Yes," he replied, "they are ca.n.a.ls. You will understand that in the hotter parts of our world it is necessary to protect the water from too rapid evaporation, or else the ca.n.a.ls would be almost run dry long before the need for their use ceased at the end of the season. Some are arched over entirely, but in most cases it is sufficient to plant trees along each side. Would you like to examine one?" he asked; "we can do so very soon, if you wish?"

I said I should be glad to do so, and our course was accordingly directed to one of the groves, which appeared to be about two miles distant. It, however, proved to be more than six miles away, for we had not yet become accustomed to the effect of the clear Martian air in making distant objects appear much closer than they really were.

However, it did not take long for our air-ship to reach it; and we descended in the s.p.a.ce between the ca.n.a.ls and then walked over into the grove. When we turned into it, we were greatly surprised at the charming effect of the trees over the ca.n.a.l.

The trees were something like our willows, but taller than elms, and had a mult.i.tude of very long, thin, and supple branches, with very little bare trunk. They were planted rather close together, all along each side of the ca.n.a.l, with their trunks sloping slightly towards the water. The long branches thus met at the sides and high overhead, intertwining together, and forming a high leafy archway extending all along the ca.n.a.l in both directions as far as the eye could see. The thick, soft Martian gra.s.s along each side of the ca.n.a.l was like a velvet-pile carpet to walk upon; the sunlight filtering between the green leaves of the trees cast bright flecks of light on the clear shimmering water which ran beneath them; whilst water-fowl swimming here and there gave a bright touch of colour and the animation of life which so adds to the general charm of such scenery. Some of the water-fowl were very large birds, with brilliant coloured plumage.

"What a delightful place for a quiet walk on a hot day like this," I exclaimed; "plenty of air and no excess of heat!"

"Yes," Merna replied; "these embowered ca.n.a.ls are very popular with the Martians, as they furnish such cool and pleasant walks in the summer time. I must also tell you," he added, "that those water-fowl are looked after with extreme care, because most of our aquatic birds have become nearly extinct since our natural areas of water failed us, and unless they were preserved would die out entirely.

"You will understand that these ca.n.a.ls are not liable to excessive evaporation; but, at the same time, it would not do to prevent evaporation altogether, because we should then fail to obtain a sufficient and fresh supply next spring."

"I quite see that, Merna," I said; "but one of our scientific men has said that it would be madness to construct ca.n.a.ls on Mars, because the water would all quickly evaporate, especially in the warmer regions, and thus be wasted."

"Well, as you see, sir, we manage to prevent evaporation to any extent we may desire," replied Merna with a smile; "and even scientific men seem liable to omit some important matters from their theories and calculations."

"How do you manage the irrigation?" I inquired; "the trenches seem rather wide apart to supply such a large area!"

"The upper layer of soil is very porous, and the water soaks along it,"

he answered; adding that "where necessary it was a.s.sisted by porous pipes laid beneath the surface.

"Besides," he proceeded, "we have small portable electric engines, with which water from the trenches can be distributed in the form of spray over wide areas. Our vegetation, too, has adapted itself to the conditions of the planet in the course of the changes which have taken place during past ages, and now requires very little water or moisture to maintain it in vigorous and healthy growth."

One more question was put to him by John, who asked, "Do these ca.n.a.ls const.i.tute your whole supply of water for drinking, as well as for all other purposes?"

"Oh no, John!" exclaimed Merna. "We draw all our pure water from deep wells. The soil of Mars, being much more lightly compacted than that of the earth, has absorbed an immense proportion of the water which was formerly upon its surface. Instead of having lost it by evaporation and radiation into s.p.a.ce, we still have it below the surface, stored up ready for use in our time of need.

"For this reason, and also in consequence of the small amount of our planet's internal heat, the water has not undergone chemical change, and mostly lies at great depths; but, of course, well-boring is much easier work than on your world, and I expect our methods are rather in advance of yours.

"Your scientists seem to have overlooked some of these points altogether. You need not pity us for lack of water, as I have heard you doing, for we have an ample supply for many centuries to come; especially as we can purify water which has been used for general purposes, and store it up for use, over and over again. Our ca.n.a.ls are only drawn upon for purposes connected with irrigation, or when absolutely pure water is not needed."

"Well," M'Allister exclaimed, "it doesn't seem that the Martians are so badly off for water as some of our clever people imagine! Why, I've read that the need of water here must be so great that the people, driven to desperation, must be fighting each other to extermination in order to get it."

"That is an entirely erroneous idea, sir," replied Merna; "and you may be quite sure that such a state of affairs will never be witnessed upon this planet. We know the time must come when our water supply will cease to be, but your people are needlessly pessimistic, and imagine terrors where we see none.

"In actual time, the end of Mars is still far distant; but, as compared with that of your world, it is very near. It will be possible, later on, to forecast, by means of our records of the rate of decrease, the time when our water supply will come to an end; but even now it is well understood how the crisis will be met. As the final period draws nearer, families will become smaller and smaller, and in the last Martian century no children will be born; so the diminishing water supply will suffice for the needs of the dwindling population. Thus the race will gradually die out naturally, and become extinct long before the conditions of our world can make life a terror. There will, therefore, be no self-slaughter, nor murderous extermination, amongst ourselves--we shall simply die out naturally.

"The planet will roll on, devoid of all life, so the loss of water and air will then be of no consequence. It will be a dead world; until, perhaps aeons hence, a collision with some other large body may transform both into a nebula; and thus once more start them on the way to develop into a world capable of sustaining life. Thus nothing in the Universe really dies; the apparent death is only the preparation for a newer and higher life.

"We Martians have no fear or dread of death, such as I have heard you say is so prevalent in your world even amongst religious people. With us death, in the ordinary way, is merely like going to sleep; and it is only the portal through which we pa.s.s to another life on another planet. Why, then, should we dread it? It is simply a removal to another dwelling-place!"

"I quite agree with that view, Merna," said John; "and our religion teaches us a somewhat similar idea; yet few of its professors look forward with anything but dread to the time when they must pa.s.s from their present life."

"Yes, John," said Merna. "What your people really only profess to believe we Martians accept as an actual certainty, for we know it is so; and, as you are aware, sir, I am a living witness of the truth of what I say.

"You know I once lived upon the earth. I died; or, as I prefer to say, I 'pa.s.sed' from thence, and was born again upon Mars. Some day I must also pa.s.s from here; whither I know not, but to another life in some other world; and the Great Father of All will provide for me!

"There are many other planets which are worlds capable of sustaining life at the present time, or which will develop into such worlds. Some of them, which we can see, are planets belonging to our own solar system, but doubtless there are myriads of planets which revolve round those millions of distant suns which we call fixed stars. If we have made good use of our talents and opportunities for development we shall no doubt pa.s.s to a world where that development may be continued on a higher plane. If, however, we have made bad use of them, it is possible that we may have to purge ourselves by a life on a planet where the conditions are the reverse of pleasant; and so on through eternity, each rising to a higher and higher plane according to the manner in which he has worked out his own salvation.

"Amongst those myriads of planets, probably there is not one which is identical in all respects with any other, and there must be an infinity of variety; some excelling to an incalculable extent the conditions of our present world, and others where the conditions are very much worse!"

"Yes, Merna," I replied. "There are some upon our world who hold very similar ideas, notably a great French astronomer named Flammarion; but in his view only those who have developed their intelligence in the proper direction will pa.s.s to other worlds and enjoy what he terms the _Uranian_ life.

"I may also say," I proceeded, "with reference to your remarks respecting the infinite variety of planetary worlds and of their conditions, that one of our great poets has stated the matter very logically, for he says:

'This truth within thy mind rehea.r.s.e, That, in a boundless universe, Is boundless better, boundless worse.'"

"Sir," said Merna, "that is really very much as a Martian would state the case; and what I have told you is our faith, our hope, and our certainty."

As we pa.s.sed along on the area outside the grove we noticed that the vegetation bordering the outermost ca.n.a.l did not show a mathematically straight edge as the ca.n.a.l lines do when seen by us through our telescopes. The edges, as a rule, were very irregular: in some places there were large areas of fallow land, and others were very spa.r.s.ely covered with vegetation.

John remarked that if any of these bare or spa.r.s.ely-covered places were large enough to be detected by our telescopes, in moments of extremely good seeing, we should no doubt be told that they afforded absolute proof that the ca.n.a.l lines are only disconnected markings, and the ca.n.a.ls a myth.

"Very probably," I replied; "yet it should be obvious that vegetation would be spa.r.s.e, or altogether absent, perhaps, for miles, in many places along the thousands of miles over which the ca.n.a.ls extend, and also that it is quite likely, if we could use higher powers so as to get a better view of the lines, the edges would appear irregular. Nature is rarely symmetrical in her work, there is nearly always irregularity of growth; and in artificial cultivation it is neither possible nor desirable to fill up every acre of land simultaneously."

Merna then told us that, owing to extensions of their irrigation system, laterally, and the consequent growth of vegetation, the width of many of the ca.n.a.l lines would be seen to increase.

"Yes," said John, "and when that phenomenon is seen by our observers we shall be informed that such increase in width is still another proof that there are no ca.n.a.ls upon Mars."

"Well, John," replied Merna, "it seems to me very strange that your people should so misinterpret the meaning of such indications. Do you really think such a contention would be put forward?"

"I'm quite sure of it," said John; "and we should be told that ca.n.a.ls could not increase in width! Don't you agree with me, Professor?"

"Yes, John," I answered; "I have seen and heard so many contentions and arguments of a like nature that I cannot say your supposition is not justified.

"I may, however, point out that it is only when the most ideal conditions of seeing exist that we can ever hope to secure a view of the ca.n.a.l lines showing the apparent breaks in their continuity. I have on a previous occasion alluded to the drawbacks connected with the use of very large telescopes, and it may be well to sound a note of warning, for it would be very easy for an observer to be deceived by an illusory appearance of the breaking up of the ca.n.a.l lines into a series of scattered markings. This effect would undoubtedly occur in using a very large telescope in any but ideally favourable atmospheric conditions, for the high powers used with such large instruments would so exaggerate the most minute atmospheric tremors that any lines on the Martian surface would inevitably appear broken up, and an erroneous deduction might be drawn by the unwary observer. If well seen, the ca.n.a.l vegetation would appear as separate markings in alignment, but no telescope is ever likely to define well enough to show the actual ca.n.a.ls, because they are so narrow."

We now returned to our air-ship, and went back to Sirapion; where, after making the necessary changes and preparations, we accompanied Merna to the City Hall, for the purpose of attending the banquet to which we had been invited by Soranho.