THE party started at a canter,—the pace which they knew their horses would be able to keep up for the longest time,—breaking every half hour or so into a walk for ten minutes, to give them breathing time. All were well mounted on strong, serviceable animals; but these had not in all cases been bought specially for speed, as had those of the Hardys. It was evident that the chase would be a long one. The Indians had twelve hours’ start; they were much lighter men than the whites, and carried less additional weight. Their horses, therefore, could travel as fast and as far as those of their pursuers. The sheep would, it is true, be an encumbrance; the cattle could scarcely be termed so; and it was probable that the first day they would make a journey of fifty or sixty miles, travelling at a moderate pace only, as they would- 294 - know that no instant pursuit could take place. Indeed, their strength, which the peon had estimated at five hundred men, would render them to a certain extent careless, as upon an open plain the charge of this number of men would sweep away any force which could be collected short of obtaining a strong body of troops from Rosario.  
For the next two days it was probable that they would make as long and speedy journeys as the animals could accomplish. After that, being well in their own country, they would cease to travel rapidly, as no pursuit had ever been attempted in former instances.
 
There was no difficulty in following the track. Mr. Mercer had possessed nearly a thousand cattle and five thousand sheep, and the ground was trampled in a broad, unmistakeable line. Once or twice Mr. Hardy consulted his compass. The trail ran south-west by west.
 
There was not much talking. The whole party were too impressed with the terrible scene they had witnessed, and the tremendously hazardous nature of the enterprise they had undertaken, to indulge in general conversation. Gradually, however, the steady rapid motion, the sense of strength and reliance in themselves and each other, lessened the sombre expression, and a general talk began, mostly upon Indian fights, in- 295 - which most of the older settlers had at one time or other taken a part.
 
Mr. Hardy took a part in and encouraged this conversation. He knew how necessary, in an expedition of this sort, it was to keep up the spirits of all engaged; and he endeavoured, therefore, to shake off his own heavy weight of care, and to give animation and life to them all.
 
The spirits of the younger men rose rapidly, and insensibly the pace was increased, until Mr. Hardy, as leader of the party, was compelled to recall to them the necessity of saving their animals, many of which had already come from ten to fifteen miles before arriving at the rendezvous at the Mercers’.
 
After three hours’ steady riding, they arrived at the banks of a small stream. There Mr. Hardy called a halt, for the purpose of resting the animals.
 
‘I think,’ he said, ‘that we must have done five-and-twenty miles. We will give them an hour’s rest, and then do another fifteen. Some of them have already done forty, and it will not do to knock them up the first day.’
 
Girths were loosened, and the horses were at work cropping the sweet grass near the water’s edge. The whole party threw themselves down on a sloping bank,- 296 - pipes were taken out and lit, and the probable direction of the chase discussed.
 
In a short time Charley rose, and saying, ‘I will see if I can get anything better than dried meat for supper,’ exchanged his rifle for Mr. Hardy’s double-barrelled gun, which was carried by Terence, and whistling for the retriever, strolled off up the stream. In ten minutes the double-barrels were heard at a short distance, and a quarter of an hour afterwards again, but this time faintly. Ten minutes before the hour was up he appeared, wiping the perspiration from his face, with seven and a half brace of plump duck.
 
‘They were all killed in four shots,’ he said, as he threw them down. ‘They were asleep in the pools, and I let fly right into the middle of them before they heard me.’
 
There was a general feeling of satisfaction at the sight of the birds, which were tied in couples, and fastened on the horses.
 
In two minutes more they were again in the saddles, Hubert saying to his father as they started, ‘There is one satisfaction, papa, we can’t miss the way. We have only to ride far enough, and we must overtake them.’
 
Mr. Hardy shook his head. He knew enough of Indian warfare to be certain that every artifice and- 297 - man?uvre would have to be looked for and baffled; for even when believing themselves safe from pursuit, Indians never neglect to take every possible precaution against it.
 
After riding for two hours longer, Mr. Hardy consulted the Guachos if there were any stream near, but they said that it would be at least two hours’ riding before they reached another, and that that was a very uncertain supply. Mr. Hardy therefore decided to halt at once, as the men knew this part of the plain thoroughly, from hunting ostriches on it, and from frequent expeditions in search of strayed cattle. They had all lived and hunted at one time or another with the Indians. Many of the Guachos take up their abode permanently with the Indians, being adopted as members of the tribe, and living and dressing like the Indians themselves. These visits are generally undertaken to avoid the consequences of some little difficulty,—a man killed in a gambling quarrel, or for rivalry in love. Sometimes they make their peace again, satisfy the blood-relations with a bull, secure absolution readily enough by confession and a gift of a small sum to the Church, and return to their former life; but as often as not they remain with the Indians, and even attain to the rank of noted chiefs among them.- 298 -
 
The men who accompanied the expedition were all of the former class. All had taken to the Pampas to escape the consequences of some crime or other, but had grown perfectly sick of it, and had returned to civilised life. In point of morals they were not, perhaps, desirable companions; but they were all brave enough, thoroughly knew the country farther inland, and, if not enthusiastic in the adventure, were yet willing enough to follow their respective masters, and ready to fight for their lives upon occasion.
 
Just as they halted, Mr. Herries thought that he caught sight of some deer a short way ahead. He therefore started at once for a stalk, several of the others going off in other directions. Mr. Herries proceeded very cautiously, and the wind being fortunately towards him, he was enabled to creep up tolerably close. The animals, which are extremely shy, had, however, an idea that danger was about before he could get within a fair shot. As he knew that they would be off in another instant, he at once practised a trick which he had often found to be successful.
 
He threw himself on his back, pulled a red handkerchief from his neck, tied it to one of his boots so as to let it float freely in the air, and then threw up both legs in the form of a letter V. Then he began moving them- 299 - slowly about, waving them to and fro. The deer, which were upon the point of flight, paused to gaze at this strange object; then they began to move in a circle, their looks still directed at this unknown thing, to which they gradually kept approaching as they moved round it. At last they were fairly in shot, and Herries, whose legs were beginning to be very weary, sprang to his feet, and in another instant the foremost of the deer lay quivering in death.
 
Taking it upon his shoulders, he proceeded to the camp, where his arrival was hailed with acclamation. A fire was already alight, made of grass and turf, the former being pulled up in handfuls by the roots, and making a fierce but short-lived blaze. A large quantity had been collected at hand, and the ducks were already cut up. Half a one was handed to each; for every man is his own cook upon the Pampas.
 
The other hunters shortly returned, bringing in another of the little deer; for the stag of the Pampas is of small size. They were speedily skinned by the Guachos, and cut up, and all the party were now engaged in roasting duck and venison steaks on their steel ramrods over the fire.
 
When all were satisfied, a double handful of tea was thrown into the kettle, which was already boiling, pipes- 300 - were lighted, and a general feeling of comfort experienced. The horses had been picketed close at hand, each man having cut or pulled a heap of grass and placed it before his beast; beside which, the picket ropes allowed each horse to crop the grass growing in a small circle, of which he was the centre.
 
Mr. Hardy chatted apart for some time with the Guachos, anxious to know as much as possible of the country into which he was entering. The others chatted and told stories. Presently Mr. Hardy joined again in the general conversation, and then, during a pause, said, ‘Although, my friends, I consider it most improbable that any Indians are in the neighbourhood, still it is just possible that they may have remained, on purpose to fall at night upon any party who might venture to pursue. At any rate, it is right to begin our work in a business-like way. I therefore propose that we keep watches regularly. It is now nine o’clock. We shall be moving by five: that will make four watches of two hours each. I should say that three men in a watch, stationed at fifty yards from the camp upon different sides, would suffice.’
 
There was a general assent to the proposal.
 
‘To save trouble,’ Mr. Hardy went on, ‘I suggest that we keep watch in the alphabetical order of our- 301 - names. Twelve of us will be on to-night, and the next twelve to-morrow night.’
 
The proposal was at once agreed to; and the three who were first on duty at once rose, and, taking their rifles, went off in various directions, first agreeing that one of them should give a single whistle as a signal that the watch was up, and that two whistles close together would be a warning to retreat at once towards the centre.
 
The watch also ascertained which were the next three men to be roused, and these and the succeeding watches agreed to lie next to each other, in order that they might be roused without awakening their companions.
 
In a few minutes there was a general unrolling of ponchos, and soon afterwards only sleeping figures could be seen by the dim light of the smouldering fire. Mr. Hardy, indeed, was the only one of the party who did not fall to sleep. Thoughts of the events of the last twenty-four hours, of the best course to be adopted, and of the heavy responsibility upon himself as leader of this perilous expedition, prevented him from sleeping. He heard the watch return, rouse the relief, and lay down in their places. In another half hour he himself rose, and walked out towards the sentry.
 
It was a young man named Cook, one of the new- 302 - settlers to the east of Mount Pleasant. ‘Is that you, Mr. Hardy?’ he asked, as he approached. ‘I was just coming in to wake you.’
 
‘What is it, Mr. Cook?’
 
‘It strikes me, sir, that there is a strange light away to the south-west. I have only noticed it the last few minutes, and thought it was fancy, but it gets more distinct every minute.’
 
Mr. Hardy looked out anxiously into the gloom, and quickly perceived the appearance that his friend alluded to.
 
For a minute or two he did not speak, and then, as the light evidently increased, he said almost with a groan, ‘It is what I feared they would do: they have set the prairie on fire. You need not keep watch any longer. We are as much separated from the Indians as if the ocean divided us.’
 
Cook gave the two short whistles agreed upon to recall the other men on guard, and then returned with Mr. Hardy to the rest of the party. Then Mr. Hardy roused all his companions. Every man leapt up, rifle in hand, believing that the Indians were approaching.
 
‘We must be up and doing,’ Mr. Hardy said cheerfully; ‘the Indians have fired the Pampas.’
 
There was a thrill of apprehension in the bosom of- 303 - many present, who had heard terrible accounts of prairie fires, but this speedily subsided at the calm manner of Mr. Hardy.
 
‘The fire,’ he said, ‘may be ten miles away yet. I should say that it was, but it is difficult to judge, for this grass does not flame very high, and the smoke drifts between it and us. The wind, fortunately, is light, but it will be here in little over half an hour. Now, let the four Guachos attend to the horses, to see they do not stampede. The rest form a line a couple of yards apart, and pull up the grass by the roots, throwing it behind them, so as to leave the ground clear. The wider we can make it the better.’
 
All fell to work with hearty zeal. Looking over their shoulders, the sky now appeared on fire. Flickering tongues of flame seemed to struggle upwards. There was an occasional sound of feet, as herds of deer flew by before the danger.
 
‘How far will it go, papa, do you think?’ Hubert asked his father, next to whom he was at work.
 
‘I should say that it would most likely stop at the stream where we halted to-day, Hubert. The ground was wet and boggy for some distance on the other side.’
 
The horses were now getting very restive, and there- 304 - was a momentary pause from work to wrap ponchos round their heads, so as to prevent their seeing the glare.
 
The fire could not have been more than three miles distant, when the space cleared was as wide as Mr. Hardy deemed necessary for safety. A regular noise, something between a hiss and a roar, was plainly audible; and when the wind lifted the smoke, the flames could be seen running along in an unbroken wall of fire. Birds flew past over head with terrified cries, and a close, hot smell of burning was very plainly distinguishable.
 
Starting about half way along the side of the cleared piece of ground, Mr. Hardy set the dry grass alight. For a moment or two it burned slowly, and then, fanned by the wind, it gained force, and spread in a semicircle of flame.
 
The horses were already unpicketed, and half of the party held them at a short distance in the rear, while the rest stood in readiness to extinguish the fire if it crossed the cleared space.
 
Over and over again the fire crept partially across,—for the clearing had been done but roughly,—but it was speedily stamped out by the heavy boots of the watchers.
 
The spectacle, as the fire swept away before the- 305 - wind, was fine in the extreme. The party seemed enclosed between two walls of fire. The main conflagration was now fearfully close, burning flakes were already falling amongst them, and the sound of the fire was like the hiss of the surf upon a pebbly beach.
 
‘Now,’ Mr. Hardy said, ‘forward with the horses. Every one to his own animal. Put your ponchos over your own heads as well as your horses’.’
 
In another minute the party stood clustered upon the black and smoking ground which the fire they had kindled had swept clear. There, for five minutes, they remained without moving, unscorched by the raging element around them, but half-choked with the smoke.
 
Then Mr. Hardy spoke: ‘It is over now. You can look up.’
 
There was a general expression of astonishment as the heads emerged from their wrappers, and the eyes recovered sufficiently from the effects of the blinding smoke to look round. Where had the fire gone? Where, indeed! The main conflagration had swept by them, had divided in two when it reached the ground already burnt, and these columns, growing farther and farther asunder as the newly-kindled fire had widened, were already far away to the right and left, while beyond and between them was the fire that they themselves- 306 - had kindled, now two miles wide, and already far in the distance.
 
These fires in the Pampas, although they frequently extend over a vast tract of country, are seldom fatal to life. The grass rarely attains a height exceeding three feet, and burns out almost like so much cotton. A man on horseback, having no other method of escape, can, by blindfolding his horse and wrapping his own face in a poncho, ride fearlessly through the wall of fire without damage to horse or rider.
 
It was only, therefore, the young hands who had felt any uneasiness at the sight of the fire; for the settlers were in the habit of regularly setting fire to the grass upon their farms every year before the rains, as the grass afterwards springs up fresh and green for the animals. Care has to be taken to choose a calm day, when the flames can be confined within bounds; but instances have occurred when fires so commenced have proved most disastrous, destroying many thousands of animals.
 
‘There is nothing to do but to remain where we are until morning,’ Mr. Hardy said. ‘The horses had better be picketed, and then those who can had better get a few hours more sleep. We shall want no more watch to-night.’ In a few minutes most of the party were again asleep; and the young Hardys were about to- 307 - follow their example, when Mr. Hardy came up to them and said quietly, ‘Come this way, boys; we are going to have a council.’
 
The boys followed their father to where some eight or nine men were sitting down at a short distance from the sleepers, and these the boys made out, by the glow from their pipes, to consist of Herries and Farquhar, the two Jamiesons, Mr. Percy, and the four Guachos.
 
‘This is a terribly bad business,’ Mr. Hardy began, when he and his sons had taken their seats on the ground. ‘I expected it, but it is a heavy blow nevertheless.’
 
‘Why, what is the matter, papa?’ the boys exclaimed anxiously. ‘Have we lost anything?’
 
‘Yes, boys,’ Mr. Hardy said; ‘we have lost what is at this moment the most important thing in the world,—we have lost the trail.’
 
Charley and Hubert uttered a simultaneous exclamation of dismay as the truth flashed across their minds. ‘The trail was lost!’ They had never thought of this. In the excitement of the fire, it had never once occurred to them that the flames were wiping out every trace of the Indian track.
 
Mr. Hardy then went on, addressing himself to the others: ‘Of course this fire was lit with the especial- 308 - intent of throwing us off the scent. Have you any idea how far it is likely to have come?’ he asked the Guachos. ‘That is, are you aware of the existence of any wide stream or damp ground which would have checked it, and which must therefore be the farthest boundary of the fire?’
 
The Guachos were silent a minute; then Perez said, ‘The next stream is fifteen miles farther; but it is small, and would not stop the fire going with the wind. Beyond that there is no certain stream, as far as I know of.’
 
‘The ground rises, and the grass gets thinner and poorer thirty miles or so on. I should say that they would light it this side of that,’ Martinez said. The other Guachos nodded assent.
 
‘We took the bearings of the track by our compass,’ Farquhar said. ‘Could we not follow it on by compass across the burnt ground, and hit it upon the other side?’
 
Mr. Percy and Mr. Hardy both shook their heads. ‘I do not pretend to say where the trail is gone,’ the former said, ‘but the one place where I am quite sure it is not, is on the continuation of the present line.’
 
‘No,’ Mr. Hardy continued. ‘As you say, Percy, there it certainly is not.............