Accordingly, when the boat grounded upon the beach, I ordered everybody out of her, with the picks and shovels, and set all hands to work cutting pegs and long slender rods, under the direction of the boatswain, retaining Forbes and San Domingo, the negro, as assistants in my own especial part of the work. Within ten minutes, the fellows had cut all the pegs and rods I could possibly require; and then, looking carefully and anxiously about me, I at length fixed a stout peg, with the nicest accuracy, in the sand at its junction with the grass, and exactly at the edge of the stream. Then I sent men here and there with long wands, which I made them hold exactly perpendicular on the ground, adjusting their positions with the most finicking precision, until I had wrought them all firmly into the belief that the whole of this labour was gone through for the purpose of finding the exact spot where the treasure lay buried. Finally, I set out by compass, and indicated, by means of two long slender rods stuck upright into the sand, a line that would take them straight into the bush where it was thickest and most impenetrable, and told them to cut a straight line in that direction, exactly two thousand yards in length from a peg which I had driven at the margin of the bush.
This task I entrusted to Rogers and the six other men, who struck me as being the blackest sheep of the flock; while, with Forbes, Joe Martin, Barr, Mckinley, Christianssen, and San Domingo, I took the boat, with a sufficient supply of axes and shovels, and made the best of my way to the southern side of the small islet upon which the treasure was said to be hidden.
Upon our arrival at the desired spot, my impression of the preceding evening that it was entirely overgrown was fully confirmed, it proving to be literally impossible to find a place where a landing could be effected without first clearing away the scrub. There was this difference, however, between the growth on the islet and that at the spot where I had left the boatswain and his party at work, that whereas the latter consisted almost exclusively of huge trees, the former was composed largely of scrub, with only a few trees here and there, so that it would not be nearly so difficult to penetrate as the other. It was evident indeed to me at a glance, now that I had the full light of day to aid me in my inspection, that the growth upon the islet was of much more recent date than that upon any part of the main island in sight from that spot; a fact which tended to confirm my previous suspicion that at the time of the burial of the treasure the soil of the islet had been bare, or nearly so, of arboreal growth.
The growth, however, was there now, and it constituted a very formidable difficulty, for how was I to identify a point exactly one thousand feet south of the obelisk rock, unless I could move freely over the ground for the purpose of obtaining my precise bearing and distance?
Suddenly a brilliant idea struck me. Immediately opposite the point on the islet at which I wished to land, there was a broad strip of sandy beach, constituting indeed part of the margin of the basin, of which the islet formed the centre. Would it be possible to make my measurements from that point? There could be no harm in trying, at all events, and we accordingly pulled across the water, landing at a part of the beach that looked eminently promising. The first thing was to determine the direction of a line running due south from the topmost pinnacle of the obelisk rock, and after a few trials with the compass, I got this. My next act was to erect a line perpendicular to this along the sandy margin of the basin, which I accomplished with the aid of my sextant, taking care to make this second line as long as the nature of the ground would allow. Then, driving a peg into the sand at the intersection of these two lines, and another at the farther extremity of my second line, I had a right-angled triangle, whereof the two pegs and the obelisk rock marked the angles. I had now only to measure very carefully my second line, which I did by means of a surveyor’s tape measure, bought at Sydney for the purpose, and to take the angle between the perpendicular and the hypothenuse of my triangle, when I had the means of calculating all or any of the elements of the triangle that I desired. In this way, then, I ascertained that the pinnacle of the obelisk rock was exactly six thousand four hundred and seventy-seven feet due north of the peg I had driven into the sand to mark the intersection of my two lines. Then, returning to this same peg, I sent Forbes away to the islet in the boat, with instructions to set up one of the oars, with a white pocket-handkerchief attached to it, on the shore of the islet at the precise spot I should indicate to him by signal. This spot I arranged to be exactly in line with the peg and the obelisk rock; all three points, therefore, were in one straight line, the bearing of which was due north and south, while its northern extremity was the obelisk rock. My next task was to take an angle to the oar from the peg at which I had taken the angle to the obelisk rock, which enabled me to determine that the oar was three thousand eight hundred and two feet from the intersecting peg, and consequently two thousand six hundred and seventy-five feet from the obelisk rock. This completed all the data I required; for I had now only to drive a bold, conspicuous staff into the sand in place of my intersecting peg, and another into the ground on the islet where the oar now stood, and by cutting back into the scrub for a distance of one thousand six hundred and seventy-five feet toward the obelisk rock, using these two staves as guides to keep their line straight, the workers would reach a spot exactly a thousand feet south from the obelisk rock; or, in other words, the hiding-place of the treasure. The two guiding-staves were soon fixed, and then, leaving Forbes to superintend the operations of Joe, Barr, and Mckinley, I replaced my instruments in the boat and, with Christianssen and San Domingo at the oars, paddled on board the barque for the purpose of bringing Sir Edgar and the whole of his party on shore, in order that they might indulge in a run on the beautiful sandy strand of the basin, and enjoy a nearer view of the entrancing loveliness of this exquisite gem of the Pacific.
Chapter Sixteen.
The Finding of the Treasure: and what followed.
Knowing that there was work enough to occupy the party on the islet for probably the next two days, I did not consider it necessary to keep a watch upon their labours, but left them with Forbes in charge, and joined the Desmond party in a ramble over the island. This, by following the ravines, the bottoms of which were comparatively free from undergrowth, we found less difficult of accomplishment than we had anticipated; and although the toil of clambering up the steep acclivities, and over the smooth boulders that in many places encumbered the way, proved rather trying to our unaccustomed limbs, we nevertheless managed to make our way to the summit of “the Nose,” as we called it, from whence we obtained a superb panoramic view of the entire island. That the place was uninhabited we could now no longer doubt; for although from our lofty standpoint we had the whole surface of the island spread out like a map beneath us, there was nowhere any break whatever in the dense vegetation which flourished so luxuriantly on the rich soil; nothing whatever to indicate the existence of cleared and cultivated patches, as there certainly would have been, had the island been inhabited. Nor did we observe any sign or trace whatever of animals of any sort; birds seemed to be the only living creatures inhabiting this lovely spot, and they appeared to swarm in thousands wherever we happened to come upon a comparatively open space. Fruits of several kinds abounded on the island, among the most abundant being bananas, mangoes, breadfruit, and cocoa-nuts. We were also fortunate enough to come upon several granadilla vines, the product of which was just ripe, and we accordingly loaded ourselves with as many of these delicious fruits as we could carry.