How in the world do you account for it, Mr Lavie? Why even Lion was taken in!"

"I am afraid I cannot give you an explanation, which you will understand very clearly, Frank. It is caused by the inequality of the temperature in the lower strata of the air; which again is the result of the reflected heat of the sun's rays on the barren, sandy plain. While the strata are unequally heated, these curious reflections, which are like those seen in broken mirrors, continue to deceive the eye. Objects appear to be raised high into the air, which in reality are to be found on the surface of the earth, often too they are immensely magnified, as indeed you saw just now; a single stone will seem the size of a house, and an insignificant shrub look as big as a forest tree. But when the sun gains sufficient power to raise all the strata to a uniform heat, the mirage melts away."

"But your shot seemed to disperse it just now."

"So it did. But my shot only disturbed the strata; and if the mirage had not been nearly on the point of vanishing, from the increasing solar heat, I doubt whether the same effect would have followed. But it is time for us to go back to our hut and finish our work. Nick, I suppose you will join us? We may see pretty plainly for ourselves that there are no fishermen's huts in this quarter."

Nick a.s.sented, and the three, after a short rest under the shade of the rocks, returned to the spot whence they had set out, and resumed their work. By two o'clock the two uprights were fixed in the sand, and in two hours afterwards the tent was complete. All the stores were then carefully conveyed inside, the keg of gunpowder being buried in the sand to prevent the possibility of accident. Then the two lads set about preparations for supper, which was to consist, like that of the morning, of fish broiled on the embers.

"And a very good supper too," observed Nick; "I don't think I ever ate a finer fish than this cod here."

"It's first-rate, there's no doubt of that," returned Frank; "but I must own I should like something besides. I suppose your flamingo there wouldn't be very good eating?"

"I expect not," replied Lavie. "The flamingo is too gross a feeder to make very good food itself. One might eat it, I dare say, if there was nothing else to be had. I have eaten lion steaks once in my life, but I have no ambition to repeat the experiment. No, I don't propose to make any further use of my flamingo than to cut off one of his beautiful red wings to make a fan of, and hand the rest of the bird over to Lion.

What a splendid-looking bird he was; it really seems almost a shame to kill him!"

They all gathered round to admire him. The colours in which nature had dressed him, showed that he was one of her favourite children. The long thin legs--they were two feet and some inches in length--were of the most delicate shade of pink, and shaped with wonderful grace. The short thigh, chest, and neck were covered with down, the softest and whitest that can be imagined. But the great beauty of the creature lay in its wings, in which the brilliant scarlet and pure white hues were intermingled with wonderful delicacy and grace, both colours being bordered and thrown out by the deep black of the under feathers.

"I wish I could stuff that specimen," said the doctor, as he contemplated the dead bird. "It would be the making of a collection.

It can't stand less than four foot four, or perhaps four foot six high.

However, I'm afraid it's rather out of place to be thinking of collections. It will be a good job," he muttered to himself, "if we are not put into a collection ourselves by some Hottentot or Damara chief But it won't do to hint that to the boys."

He seated himself on one of the casks in the shelter of the tent, and appeared to be watching the preparations for supper, lost, in reality, in a reverie of mingled pain and pleasure. He was roused at last by the information that Warley was returning; and presently the youth himself appeared on the scene, throwing down, to Frank's great satisfaction, a brace of wild ducks which he had been fortunate enough to shoot. His report, however, was not encouraging. He had reached the extremity of the bay, and had ascended an eminence, perhaps two or three hundred feet high; but nothing was to be discerned from it but long wastes of mingled rock and sand, varied here and there by thickets of euphorbia, or monotonous scrub. In the distance indeed were lofty mountains; but it was impossible to say, in that transparent atmosphere, how distant they might be. As regards the more immediate object of his expedition--the discovery of some trace of man--it had been an entire failure.

While Warley was delivering his report to the doctor, the other two were busied in plucking and roasting the ducks. Presently it was announced that all was ready, and the four sat down to their repast with an appet.i.te sharpened by a long day of exertion. It was no sooner over than fatigue began to a.s.sert itself in place of hunger. It was agreed that the fire should be kept up all night, and that each should watch for two hours by it. It was now nearly nine o'clock, and the last watch would thus bring them to five in the morning, when it would be desirable that all four should be awakened to the heavy day's work, which (as none of them doubted) lay before them.

CHAPTER FIVE.

PLANS--THE BOYS SET OUT--A DISAPPOINTMENT--THE FIRST BOK--WATER!

WATER!--A MIDNIGHT VISITOR.

The whole party slept soundly, and by six o'clock were sitting under their tent over the remains of their breakfast. Frank and Nick were on the point of issuing forth to collect some more fish for the mid-day meal, when the doctor called to them to stop.

"It is time," he said, "that we hold a consultation, and come to some resolution respecting our future movements. Sit down here in the shade, and we'll talk the matter over."

The boys obeyed, and took their places; Lion, as usual, seating himself at Frank's side, and occasionally bestowing a broad lick of affection on his face and hands.

"I have made a fresh examination of the boat this morning," began Lavie, "and am quite satisfied that it is impossible for us to repair her. She is an old boat, and wouldn't anyway have lasted much longer, and now she is so much hurt, that no one but a regular boat-builder could make her float again. It is impossible therefore to carry out our original intention of going on to Cape Town by sea. Well, then, we must hit on some other plan."

"Wouldn't it be the simplest way to travel along the line of coast the whole way?" suggested Ernest. "As far as I remember my geography, there are no bays running far inland, or very wide rivers to interfere with us."

"You're right, Ernest," rejoined Lavie. "There are nothing but small bays all the way, and until we reached the mouth of the Gariep, there would be no rivers to interfere with us."

"And when we did reach the Gariep, said Frank, we should be pretty safe to fall in with some settlers or, any way, natives, who, 'for a consideration,' would help us through the rest of our journey. I think Ernest's advice very good."

"I should think it so also, Frank," said the surgeon, "if I didn't happen to know something of the line of country proposed. I have never been along it myself, but I have met people who know it well. It is one long sandy waste the entire way--no trees, no gra.s.s, scarcely even a rock; and if there are any water-springs, they are so few and scanty, that it is almost the same thing as if there were none at all. There would be no food to be obtained, no shade from the sun, and no resting-place at night, as it would be impossible to carry our tent with us. And, to wind up, we should certainly not meet with a human being from the beginning of our journey to its end."

"Well, that is pretty nearly enough, I think," observed Nick, "I have no fancy to be broiled like a fish on a gridiron, or have a leg of nothing and no turnips for dinner, like the clown in a pantomime. Let us hear what you propose."

"I advise that we should travel towards the east, until we come to the banks of one of the rivers which run southward into the Gariep. I know there are several at no very great distance from the coast: we can follow any one of these to its junction with the great river. When we have once got there, I have no doubt what Frank suggested is true enough. We shall come to the farmhouse of a Dutch boor, or a Hottentot village, or fall in with a hunting party, and so find the means of reaching Cape Town."

"That sounds feasible," said Frank. "We shall be sure of water, at all events, by going that way, and water's the first thing to be thought of."

"And there'll be plenty of game, most likely," added Lavie, "and, any way, fish."

"And shade from the heat of the sun, and resting-places at night," said Warley.

"But how about the wild beasts and the snakes?" struck in Nick.

"Wouldn't it be better to make a canoe, or a raft, and sail down the river itself?"

"That is not a bad idea, Nick," said Frank. "What do you say to that, Charles?"

"That it would be a very good idea on some rivers, but not on these,"

answered Lavie. "Nick has never seen one of these South African rivers, or he'd never suggest it. At times, the channels here are reduced to mere threads, along which no boat that was ever made could pa.s.s; at others, they are swollen to raging torrents, which would shatter them to fragments. A boat journey to the Gariep is out of the question."

"Very well, then, we must make the journey along the banks," said Warley. "Of course we must follow your advice, Charles. You know a good deal about the country between this and Table Bay, while we know absolutely nothing. I suppose you would recommend that we should set off, as soon as possible, for the nearest river that runs southward?"

"Yes," said Lavie, "there is no kind of object in delaying here. There is neither food nor shelter to be had here, neither shade nor water; and the stench from the mud and the dead fish is very far from fragrant. I counsel that we move off with as little delay as possible."

"Hear, hear," said Frank; "I am quite of the same mind. Well, then, Charles, the next thing is, what are we to take with us? The boat would have held as much as we were likely to want; but our backs and pouches are different things."

"Quite so, Frank--that was the next thing I was going to speak about.

We must, of course, leave by far the greater part of our cargo behind.

In fact, we must c.u.mber ourselves with as little baggage as possible.

But some things will be absolutely necessary. There are the guns and powder-flasks and bullets. We cannot do without them."

"That is voted, _nem. con._," said Warley; "and there is the flint and steel and tinder-box. The doctor's burning-gla.s.s will be no good when the sun doesn't shine."

"And we shall want the gridiron, and the knife and spoon and cup, and the iron pot for cooking and holding water," struck in Nick.

"Each of us ought to carry a change of linen," said Mr Lavie, "and a second pair of shoes; but no more, I think. I suppose one brush and comb must serve all four."

"I hope you'll take your lancets, Charles, and some physic, in case of any of us being taken ill," suggested Warley.

"I am not likely to forget that, Ernest," returned the surgeon. "Very well, then, that will be all. We had better each provide ourselves with the articles agreed on, make a hearty meal off some of the salt meat and biscuit, and then set off at once, leaving everything else in the boat, for the benefit of any one who may be thrown up, like ourselves, on these barren flats."

No one urging farther objection, this programme was forthwith carried out. Belts and knapsacks were adjusted, the various articles required for the general use were divided between the four, a hasty meal was eaten, and then each man took his gun, and the party bade farewell to the old boat and low sandy sh.o.r.e, and set forth on their travels.

They soon surmounted the rocky shelf which they had visited on the previous day, and, pa.s.sing through an opening in the barren hills, entered a valley, which seemed even more dreary than the scene they had just quitted. On either side were rocks of a dull grey colour, broken into all kinds of fantastic shapes, and full of holes and winding caverns, which suggested the possible neighbourhood of venomous snakes.

Nick, in particular, cast many a suspicious glance at these orifices; which seemed to his imagination the lurking-places, whence at any moment the hideous head of a cobra or python might rear itself, preparatory to a deadly spring on its victim. He was greatly relieved when, after an hour or two of walking, the valley gradually opened into a wide plain, and patches of vegetation began to show themselves. The euphorbia was the first to appear, with its tall stiff bunches of foliage, each of which bore a curious resemblance to a chandelier with its cl.u.s.ter of candles. Then the kameel-doorn, the dwarf acacia, and the wild pomegranate began to vary the landscape with their contrast of colours; and presently there appeared the aloe and the mimosa, the bright yellow of the last-named reminding Ernest of the gorse and broom among which his walks had so often lain.

But though there was a great improvement in respect of the scenery, its most important accessory, water, was nowhere to be found. Lavie looked anxiously on all sides for some indication of the vicinity of the river; which, if his information was correct, lay only a few miles eastward of the spot where they had landed. They could hardly have mistaken the way, for no other opening in the rocks had been visible in any direction, except that which they had pursued; and the gradual downward slope of the glen could hardly end in anything but water. But they had now been travelling since mid-day, only sitting down to rest for a few minutes, at intervals of two hours or so; and now the sunset was near at hand. He was greatly rejoiced when, on turning the corner of a dense clump of euphorbias, they came in sight of what was evidently the course of the river, though the dense bushes on either side hid the stream from view.

"Hurrah! my lads," shouted the doctor; "now for a good drink, and a cool bath too, if the water is only deep enough."

He broke into a run as he spoke, and was joined by the other three, who forgot their weariness and anxiety in the excitement of the moment Lion bounded along at Frank's side, as eager apparently as his master. They were the first to reach the fringe of shrubs, into which they plunged with headlong haste. But the next moment there came a loud cry of disappointment; the others hurried up, but only to catch sight of Frank and Lion standing over a dry bed of sand, which had evidently once been the channel of the river. There was now not the slightest trace of water to be seen. The sand was not even moist. Lavie now felt extremely anxious. There were rivers he knew lying to the eastward, and that at no very great distance, twenty or thirty miles at the outside, and probably they were not so far off as even twenty miles: and if so, the strength of the whole party might hold out until the nearest was attained. But then the lads were not used to roughing it in the desert; and they might miss the track and become too exhausted to travel further. He had fully reckoned on finding water at the spot which they had now reached, or he would have brought a supply with him from the water-cask in the boat, which had still contained several gallons. But it was too late now to think of returning that night to the seash.o.r.e, and besides, such a step would naturally alarm and depress his companions. The best chance would be to proceed on their way as long as daylight lasted, and take the chance of falling in with some of the springs or pools, which are scattered about, though at rare intervals, in this inhospitable land.