"They will attempt to surround us, and we shall now have to attack them by a.s.saulting one party at a time. As suggested in our previous encounters, the five guns must always be kept as a reserve for the last emergency. Fire and then reload, and we should attack one of the parties at a time, so the greatest execution at any one point will be most likely to cause the greatest effect. Fire with the utmost care and deliberation. Three will fire at a time, and then, after an interval, three more can fire, first at one party and then at the next. Such a course will be most likely to throw them into confusion. Furthermore, care should be taken that all do not fire at the same individual. The one on my left should aim at the one in the party to the left, and the one firing on my right should select some one in the group to the right of the center, while the center of our firing squad will aim at the center of their band."

These precautions were necessary with the new recruits. The two firing squads were arranged in this order: The Professor, with George and one of the boys at his sides, and John with Harry and the other boy a.s.sisting him.

The position of the wagon was a strong one, as it was flanked near both ends by large trees, and it was fortunate that no large trees grew near them, the position having been selected with the object of defense in view; but they were liable to attack from all sides, which made the position more difficult.

The two flanking parties made their way carefully around, and at a signal, a rush was made. The Professor ordered the first volley, and three fell. This immediately checked the attacking party on that side, but the other did not stop, and after deliberately holding their fire until they came up much nearer, a fair target was obtained, and the order to fire was repeated.

The Professor had antic.i.p.ated a rush from the center party, but the terrible effect of the two rounds had demoralized them. The reserve guns were ready had it been necessary, and without waiting for the renewal of an attack the guns were reloaded, and Harry and George took it upon themselves to load the boys' guns during the interim.

The besieged played a waiting game. With ten shots at their command they felt sure of being able to withstand anything but a rush, and even in that case, they had the bolos and the spears all within reach. It was an extremely hazardous, but not the most dangerous, position, since six fighting men, in a safe position, could not be easily overcome, as the Professor explained, and this gave all the boys the greatest confidence.

The flanking parties withdrew, and joined the others, taking with them the wounded. Two hours of quiet reigned. The night, which was now approaching, was the most dangerous period, and they appreciated the insecurity of the position to withstand a night attack.

The river was to their right, and not more than two miles away, and the boys saw the Professor frequently look in that direction. "I believe,"

he finally said, "we can better afford to take the risk of a daylight trip to the river, than to remain here another minute. The lesson we gave is rankling within them, and they will attack us with different tactics the next time."

The yokes were still on the yaks, and it was the work of moments only to bring them to the pole and when the ring had been slipped on Harry had them in motion down the hill. The Professor and John dismounted, and stood guard, and Harry was told to move directly toward the river and pa.s.s to the right of a hill, which appeared to have a precipitous side, which was not more than a half mile away.

The parting injunction of the Professor was: "Go on without stopping until you reach the clump of trees before you and just beyond the little stream in your path. That will give you a good view of every approach."

The wagon went down the hill at a rapid pace. The Professor and John kept a vigilant watch on their enemies, and it was not long before the disappearance of the wagon was noted, and then the utmost excitement prevailed. It was evident that there was no concerted movement among them. There was an aimless running to and fro, but the two stood there, guns in hand, and that no doubt disconcerted the natives, who evidently believed that the wagon had been removed to a more advantageous position.

The inaction did not continue long, for it was now noticed that parties of two and three stole out from the shelter of the huts, some going to the north and others to the south, with a view of surrounding and spying the new position. The wagon was beyond the sight of their position on the hill, and after John had looked inquiringly at the Professor several times, both began a forward movement after the wagon, and by proceeding at a rapid pace discerned it in the distance.

After crossing the little stream referred to by the Professor, both halted, in order to scour the country behind them. John clutched the Professor by the sleeve and pointed to several moving figures to their left, cautiously moving up the hill to the position previously occupied by the wagon.

This was a great relief, as it was evident the savages had no idea that the wagon was in full retreat toward the river. Moving cautiously from tree to tree the Professor and John traveled as rapidly as possible in the direction of the wagon, and the boys were commended for their forethought in keeping the wagon in a hidden position while awaiting their arrival.

"It looks as though we had outwitted them, at any rate for the time being, and it will keep them back long enough to enable us to get a good start, so hurry on as fast as possible. Make for the side of the hill which I pointed out before. If they discover our absence, and can gather their forces we may be able to use the precipitous side of the hill as a protection. But remember, the river is our objective point."

No urging was needed. On the way the second stream or running brook was crossed. Harry called to one of the boys: "Get some of the copper kettles from the wagon and get some water. If we are held up at the hill the yaks will need it, as well as ourselves." George and the boys recognized the importance of it, and weak as the two rescued boys were, they dragged the filled kettles to the wagon, and George fastened the wooden covers on them.

Within ten minutes more the hill was reached. It was not high nor difficult to mount, and at one point it seemed to spring up into a peak, the southern side of the point presenting a steep outline. The boys saw that on the side facing the river, which was less than a mile away, the precipitous portion was formed by a wall of peculiar brownish-gray rock.

Behind this rocky fortress the wagon was driven, and the first care of Harry was to water the animals, as they had not been allowed to quench their thirst on the way. They waited an hour or more for the appearance of the Professor and John. George went out on a quest back over the trail which they had just made, and almost reached the stream before he caught sight of them lurking through the trees and shrubbery.

They were relieved to know that the wagon was in safety, and after the stream was crossed the three delayed no longer, but hurried rapidly forward and soon reached the wagon, to the great relief of Harry and the boys.

"Let us haste to the river," was the Professor's hurried order, as he came up, and the yaks were at once urged forward, but as he pa.s.sed the rocky wall, he cried out: "Wait, let us examine this first."

The boys knew that if, in such an emergency, he could call a halt, the appearance of the rock would reveal something that might be of value.

The action of the Professor attracted the attention of John at once, and he turned to the wall and glanced along its face in an inquiring manner, and as he did so wandered along the rocky outline in a curious manner.

While the Professor was engaged in examining the formation John came back hurriedly into sight, in considerable agitation, and running up to Harry, grasped him by the arm and led him back. Harry followed, intensely interested, and the other boys also noted the movement and rushed over to the narrow trail which they had taken.

As they rounded a corner John and Harry had disappeared, and George was astounded. In a moment more Harry ran back and cried out: "Tell the Professor to come, quickly."

He appeared, as the unusual sight of the boys running after John had already attracted his attention, and when the boys reached the second turn and saw the Professor coming up, the latter was curious to know what the commotion meant.

"It means," answered Harry, "that we have found another cave."

The entrance was to the left, and was so hidden by shrubbery that only the utmost scrutiny enabled them to distinguish it.

They gazed at each other in astonishment. George was the first to speak: "Why wouldn't this be a good place to hide?"

There was no answer, but John heard, and immediately shook his head, and the Professor, not noticing this motion of John during his intent examination of the entrance, turned around and said: "We must leave this place as quickly as possible."

This startled all of them into activity at once, and they made a rush for the team, with John in the lead. Without a moment's loss of time, the way was made down the hill, and the Professor and John took up their positions as rear guards.

"Drive directly to the open s.p.a.ce at the bank to the left, and unhitch the team."

The boys heard and started forward, urging them along as fast as the condition of the ground would permit, and within fifteen minutes had the team ranged behind the wagon in a manner similar to their previous training for the purposes of defense.

"I think one of you boys and George had better go back and a.s.sist in case they are pursuing," and Ralph, the stronger of the two, volunteered, and after taking a new supply of ammunition, followed back in time to see a number of lurking savages on the hill beyond the last stream.

The escape had been discovered, and the savages collecting their forces were in full pursuit. In an incredibly short s.p.a.ce of time the shelving path along the rocky wall, adjacent the cave, was filled with warriors, who could now plainly see the wagon at the brink of the river, and the Professor and John soon appeared and urged haste back to the wagon.

Ralph ventured the opinion that while there might be fifty or more in the party, he was sure that a still greater number were available, and when Tom, the other boy, was appealed to, replied that there must be considerably more than one hundred, if not a hundred and fifty in the tribe who might be mustered to attack them.

When the wagon was reached all were cautioned not to waste any ammunition, as they had but little to spare. The savages came up and took position far beyond the range of the guns, and the open s.p.a.ce afforded them a much better protection than would have been available, even at the hill.

It was evident, however, to George and Harry, that John and the Professor had some other reason for urging the sudden departure from the mouth of the cave. Neither could have seen the savages approaching from that point, and they noticed the two looking at each other when the savages made their appearance in front of the cave.

There was no time for questionings now. Would they attempt an attack? It was past midday, and hunger had been forgotten. While both of the rescued boys had kept within the wagon as much as possible during their flight from the hills, they were very weak, and had been given food in small quant.i.ties, so as to accustom their contracted stomachs to the stimulating action of the nutriment.

Within an hour new parties approached from the rear. Reinforcements were coming, and they probably intended to delay the attack until the entire force was available. This looked very serious indeed, but through all the Professor was grave and dignified, and showed no evidences of being unduly disturbed at the gathering clans.

"What we need fear more than anything else now is a night attack," was the Professor's comment, as he watched their movements.

Ralph stepped up to the Professor, and said: "I do not think they will venture to do so, because I do not remember that they have ever attempted to do so at night. The tribe that captured us always made night sorties, but these people never did, and for that reason I do not believe they will attempt it now."

The Professor thanked Ralph for the information.

CHAPTER VI

THE TALE OF THE RESCUED BOYS

Night set in without a sign of attack. The heavens were filled with stars, but there was no moon, and this afforded a cover for both parties.

And now, when they were at last quiet for the first time since the release of the boys from their loathsome captivity, all were eager to hear their history.

Harry and John had both learned during the s.n.a.t.c.hes of conversation that they were able to take advantage of, that Ralph and Tom were companions on the ill-fated _Investigator_, when she went down. They were not remembered at the hut, and neither of the boys recalled the others, because the emaciated condition of the two was such as to make recognition impossible, and Ralph and Tom were too much excited to know or care who had delivered them, but they recognized the Professor before it dawned on them that the two boys were their former companions.

But let us listen to the tale as Ralph told it: "We were on the after part of the ship at the time the explosion took place. It was between nine and ten at night. The explosion seemed to break the ship in two, and an officer, a seaman, and three of my companions, including Tom here, launched one of the boats, and when it was apparent that the vessel was sinking, the officer ordered the boat away. We saw two of the lifeboats, and made for the nearest one, when the wave from the sinking ship nearly overturned us. Soon after a heavy fog covered everything, and when that disappeared a high wind arose, and the sea became choppy and the froth was blown over us so that all became drenched."