“I am awfully anxious to know where the charted islands can be that John spoke about,” remarked George, as Harry was consulting the plans of the boat they were building.

“They must be in this section of the southern seas, or his party wouldn’t have sailed in this direction,” answered Harry, after a pause.

“Do you think he would be offended if we spoke to him about it!”

“No;” answered Harry, after some reflection.  “He has spoken to me about it several times.  But why do you ask!”

“For the reason that I think it would be a grand thing to hunt them up.”

Harry laughed, and then slowly said:  “That would be a big thing to undertake.  But what about going home?”

“I hadn’t forgotten that.  I meant that when we came back it would be proper for us to undertake.”

“Well, haven’t you had enough trouble during the past two years?” And Harry laughed, just as though they hadn’t gone through sufficient trials to last a life time.

“I wouldn’t mind going through the same experiences, when I remember what we have learned and what all of us have accomplished,” responded George, as he looked through the window, reflectively, and watched the natives at work.

It will be difficult to understand the force of the above conversation, unless the reader knows the situation in which the boys were placed at the time it took place, and the locality of the scene where the conversation was held.

Over two years previously two boys, George Mayfield and Harry Crandall, were members of a school training ship which left the Harbor of New York, for a cruise in southern waters, the object being to instruct the crew of seventy boys in the art of seamanship, as well as to give them a foundation knowledge in the arts and sciences.

On board they became intimate with a gray-haired Professor, who became very ill.  They were particularly attracted to him, and waited upon him, until they reached the Pacific Ocean, where, for some reason the ship met a catastrophe, and the crew were compelled to take to open boats.

The two boys, with several companions, and the Professor, were together in one of the life boats, and after leaving the sinking ship a terrific gale, one of the great monsoons, separated them from the companion boats, and for six days they were driven about in the vast ocean, absolutely helpless.  During this time all their young companions were washed overboard, and they were driven to the point of despair, when they were cast ashore on an island.

They were thus placed on an unknown land, with nothing but their scanty clothing, and devoid even of a knife.  There is no indication that the land was inhabited, and for the first three months, while recuperating, they had no opportunity to go far from the spot where they landed.

After the Professor had regained his health, they began to make a few necessary things, and hunt for the food which was necessary to preserve life.  As they grew bolder, however, they fashioned crude implements, like bows and arrows, and primitive articles of utility.

They made a few trips into the interior, and then saw the first indications which pointed to the presence of inhabitants.  From some of the traces it was evident that the people must be savages, and then they saw the necessity of preparing themselves to meet hostile neighbors.

Then began the most remarkable series of adventures on the part of the boys, under the instruction of the Professor, to provide not only the necessaries of life, but many of the luxuries.  While engaged in the different enterprises they undertook numerous excursions, all of which confirmed them in the first intimations that they had landed on an island, and that it contained one or more savage tribes.

To recount all that the boys did, even in the briefest space, would be impossible in this book, and it is not necessary, in order to relate the happenings from this time on; but some things are necessary, because we shall have to deal with incidents which took place during their adventures, and this volume also brings into the scene several characters, in addition to the three which have been named, as the principal participants.

The incidents referred to were called by the boys “the mysteries.”  When they landed on the island they erected a flag pole, and improvised a flag which was kept at half mast, and mounted on a high point, so that it would attract passing ships, if their island chanced to be in the path of vessels.  During one of their excursions the flag pole and staff disappeared.

For the purpose of making one of the trips by water a boat was built, and they sailed it up a large stream, only to find that within ten miles of their home was an immense cataract, or falls, around which they could not porter the vessel.  It was left below the falls in a secure position, and ten days later, when they went for it, were surprised at its disappearance.

Later on it was found miles away, but the little closets which they had built in to hold their food and clothing, had disappeared, and they were still more startled to find a pair of oars, which they could not have made, attached to the boat.

In repairing the boat a note was discovered, written by some one who could not have been a member of their ill-fated vessel.  This added to their perplexities, for it indicated that white people had been on the island, as well as savages.

Then they found strange ropes, evidently fashioned by a crude hand; a skull of a well-developed man was picked up on the shore not far from their home; part of the wreckage of a vessel was discovered; a herd of yaks was captured and a mysterious brand deciphered on one of them.

But in their wanderings they found the entrance to a cavern, and this was explored, resulting in finding that it was formerly a pirates’ lair, and they were astounded at finding immense wealth in its hidden recesses.

They industriously searched the island, and found numerous ores which were dug out and smelted and from which they were able to build many things that added to their comfort; and finally, firearms were constructed, and powder made.

They spent much of the time in chemical experiments, in hunting for and gathering the different vegetables, and fibres, and from the latter learned how to weave cloth, to make felt, and to turn skins into leather from the animals which they hunted.

Their adventures were not wholly devoid of the amusing things of life.  In one of the expeditions they captured a young Orang-outang.  This was carefully taught to do many things, and it became not only a valuable assistant, and a wonderful scout in their wanderings, but it afforded them immense amusement, which was appreciated by the boys.

And now, having been provided with suitable weapons, they determined to go on voyages of discovery, being prompted in this course, because they found in the wreckage along one of the rivers, and far in the interior, a life boat which was a companion to their own which had been lost when they were stranded in the great tempest.

It was evident to them that some of their companions were on the island, and probably, captives.  This made the quest a most exciting one, so every energy was bent toward the end of helping the unfortunates.

On the initial expedition, after the completion of the first weapons, they came into contact with several tribes of savages, one of whom was captured, after being wounded.  It developed that he was a chief of one of the tribes which at that time were at war with each other.

Returning from this trip they discovered at their home a distinguished looking white man in rags, totally devoid of intellect, and unable to speak.  It was evident that he had met with some accident, but he was entirely harmless, and obediently took up and performed every sort of manual labor,-in fact, was an expert in any sort of mechanical operation required of him.

In hunting, or in scouting, he was a perfect specimen of the hunter, or the soldier.  It seemed to be an instinct with him to render every kind of service that might be needed, with the gun, or the tools which were all about him.  In the absence of a better name they christened him John.

On the second trip into the unknown portions of the island they met three of the savage tribes, with whom they had several battles, and one of the natives was wounded and captured.  While wandering through the forests, in their efforts to return to their home, they ran into a savage village, where they were successful in rescuing two boys who had been shipmates on the Investigator which went down months before.

While this was a source of joy it was clouded by the information that they were not the ones who came to the island in the life boat that the boys had found in the river.  This was evidence that others must still be in the island, and probably held as captives.

Some months after the silent John came to them, his reason and the ability to speak returned to him, and he told a wonderful tale of his wanderings, and that which impressed the boys most was the information that he had shipped in a vessel which was designed to search out the treasures hidden in the islands of the South seas.

From hints which he dropped from time to time, the islands containing the treasure were charted, and later on, one of the caves so charted was found on the island they now occupied, although they also found several which were not alluded to and could not be recognized by the description, according to the story told by John.

John was an educated man, an archaeologist, and, next to the Professor, had the most varied knowledge of any one the boys ever met, and it can be understood, that their association with men of that class made them remarkably active in seeking out and understanding the wonderful things that nature presents in every field of human activity.

In order to be as brief as possible with this part of the story, it is necessary to add that the rescue of the two boys, and the restoration of John’s faculties, made a strong party, and new weapons were made, and the real expeditions through the island begun.

During the first extended trip, the Professor was captured.  Out of this misadventure grew some of the most remarkable series of events, but finally, they were successful in rescuing four more of their former companions, and two of John’s shipwrecked companions.

The capture of the Chief, formerly alluded to, and the subsequent rescue of a chief who was about to be offered up as a sacrifice, served as a means to bring two of the tribes to the rescue of those in the expedition, and the Professor, by his wisdom, was able to enlist the services of the tribe which had captured him.

The events which lead directly up to the beginning of this volume were brought about by the enmity of two of the most bitter and vindictive tribes, which compelled the Professor and the boys to form an expedition against those hostiles, in which four other tribes assisted.

They captured the Chief, and rescued two of their former companions, and then built a town called Unity, where the advantages of civilization were taught the natives, and to which place many of the families of the natives emigrated.

All the chiefs formed an alliance of peace, and the Professor was made the chief magistrate.  After peace and order had been restored, the boys again began to long for home.  Prior to this they had determined to build a ship large enough to take them to the nearest shipping point, and they were now feverishly engaged in the work with the aid of the natives, who were eager to learn how the white men built the wonderful things which they saw all about them.

It will, therefore, be understood, that the remarks of George, at the opening of this chapter, had reference to the fact that the most important of the islands, or the ones having the most of the treasures could not be the one on which they resided, but pertained to some other localities.

“Well, if there is anything I am interested in, it is to know why the wonderful buildings we found at the Illyas’ village were put up at that place, and what caused all trace of them to be lost,” said Harry, after George had expressed his last opinion.

“Do you remember what John said, after we came out of the cave below the village?”

“No; what was it!”

“He said the copper in the cave might explain it.”

After the capture of the last tribe, John demanded that the Chief inform them of the location of the Hoodoo, or Medicine Men of the tribe, and he reluctantly consented, but the Chief warned them, that to attempt to enter the cave would mean Death.

John knew that the Chief and the people believed the death tales told by the Medicine Men, as it was tales of this kind which enabled them to maintain such a hold on the people.  In order to destroy the power of those people, who really had been the cause of much of their troubles, John announced that he would take the Chief and his followers to the cave, and that he would then go into the cave alone, and come out again, to prove that the Medicine Men had lied to him.

John entered the cave, and single-handed captured the Krishnos, as they were called, and brought them out, thus verifying his statement that those men had deceived the people.  Soon thereafter John and the boys entered the cave, which, from the description he had, contained an immense amount of treasure, but they were unable to discover any trace of it if it existed.

By accident the calcareous deposit was broken off at one part in their search, and below was found a dark material, which, after examination, was found to be copper.  It was not in its native state, but was a product produced by smelting the ore, and they uncovered an immense quantity of it, sufficient to show that the portion of the cave in which it was found was really a storehouse.

Not more than a mile away was the Native village, where they held the tribe captive.  The village was absolutely unlike anything else in the form of habitations found in the island.  Three of the buildings were large structures, built in three of the well-known types of architecture, and the other parts of the village were laid off regularly.

Surrounding the village was a strong embankment, as though originally used as a fortification, and the village itself was located on the side of a hill, betokening sanitary considerations.

“But I do not see,” observed George, “what the copper in the cave had to do with the town?”

“Nor do I,” responded Harry.  “Suppose we see John at the first opportunity.  There are other things besides the copper I would like to know.  John has asked every one that he has come into contact with about the different wrecks that have come ashore within the past two years, and no one seems to have any idea that more than two of the Investigator’s boats came ashore.”

“Well, if they did it isn’t at all likely that they could come to the southern shore, when the wrecked vessel was to the north of the island.”

“It is just for that reason,” responded George, “that I believe we shall find other islands in the vicinity, and who knows but some of the boats reached those islands?”

“I am with you,” said Harry.  “Shall we talk to John about it?”

“By all means.  But stop!  Why not have a talk with the Professor first?”

“Good idea.  We owe everything to him.”