We had an early breakfast and then Ned Britton bade us good-bye and started obediently to descend the river and explore along the coast. He was loth to abandon the more dangerous and fascinating quest for the diamonds, but being loyal to the core he knew how to obey orders without grumbling.  
As soon as he was away we began preparations for our own departure. The first thing was to arrange for launching the convertible automobile, which Moit had been examining very carefully ever since daybreak. He reported that it had sustained no damage whatever from the storm or the shock of grounding and was in perfect condition. So all we had to do was to remove the guy ropes, let it slide down the slanting deck to the bulwarks—over which we lifted it with a crane attached to the mizzenmast—and then let the machine descend gently until it rested on the bosom of the river.
 
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I was still so skeptical concerning some of Moit’s absurd claims that it would not have surprised me to see the huge car sink like a stone; but instead of that it rode the water like a duck, the wheels half submerged, the rail high above the water-line.
 
We now filled the ample lockers beneath the seats with provisions, put in a cask of fresh water in case the river water proved unpalatable, and took along such trinkets as we could gather together for trading purposes. We each carried a brace of revolvers, Moit and I (being slaves) concealing ours, while Nux and Bry carried theirs openly.
 
Finally we dressed for the excursion. The gay checked suit and tourist cap of Uncle Naboth we gave to Nux, and although they hung rather loosely he presented a most startling appearance in them. He swung a brass watch chain of gigantic size across his vest front and Uncle gave him a few of the big cigars to smoke when he wanted to “show off.”
 
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Bry wore a white duck suit belonging to Duncan Moit, and to my astonishment looked as aristocratic as any Eastern potentate on his first visit to London. These Sulus were by no means bad looking men, if one could forget their color, and they took great delight in the transformations we thrust upon them.
 
As for Moit and myself, we hunted among the sailors’ cast-off togs for the most disreputable “land clothes” we could find, and those we selected were ragged and dirty enough, in all conscience. I wore a run-down shoe upon one foot and a red leather slipper on the other, and when I had rumpled my hair and soiled my face and hands I am sure I was as disgraceful in appearance as any ragged urchin you ever came across.
 
I was not wholly satisfied with Duncan, however. In spite of his apparel there was so thoughtful a look in his big gray eyes and so well-bred and composed an expression on his finely molded features that he could not look a servant’s part as fully as I did and the best I could hope was that the San Blas people would consider him an unfortunate gentleman in hard luck.
 
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There was much laughter and amusement among the men we left behind on the wreck, when they beheld our queer appearance. Uncle Naboth chuckled until he coughed, and coughed until he choked, badly frightening those who were unaware that this startling exhibition was usual with him whenever he reached that climax of joy which he called being “desp’ritly pleased.”
 
I bade him an affectionate farewell, and then we four got into the “auto-boat.” Moit sprung the paddles from the rims of the wheels and started the engines, and a minute later we were waving our hands to those on the wreck and gliding at a good rate of progress up the river.
 
The bulky machine did not draw so much water as one would imagine, owing to its broad displacement and the lightness of the material employed in its construction. We found the current gentle, and made such good time that at eleven o’clock we passed between the two hills indicated on Maurice Kleppisch’s map, a copy of which I had brought with us.
 
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The current was swifter here because the mounds narrowed the river considerably; but Moit gave the engines a little more speed and we went through without abating our rate of progress.
 
Just beyond the hills we saw a group of Indians standing beneath the trees on the left bank and regarding us earnestly but calmly. Perhaps they had seen small steamers and thought our craft belonged to that class, for they exhibited neither fear nor surprise, merely turning their grave faces toward us and remaining otherwise motionless and silent as we glided by.
 
I whispered to Bryonia and Nux to stand up and bow a greeting, which they proceeded to do with amusing and exaggerated dignity; and then I told Nux to box my ears, which he did so promptly and in so lusty a manner that they rang for several minutes afterward.
 
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I had explained to my blacks at great length our reasons for undertaking this queer adventure, and what we expected them to do to carry out the farce and assist us in securing the treasure. I had even read to them the dead man’s diary, from beginning to end, so that they would know as much about the San Blas as we did. They were, as I have said, both clever and resourceful, besides being devoted to me personally; so that I felt justified in relying to a great extent upon their judgment in case of emergency.
 
Should I need to give them any secret instructions, I could do so in their own language, which they had taught me during the tedium of several long voyages, and which I prided myself upon speaking fairly well. It was the language of their own island of Tayakoo, for these were not properly Sulus but natives belonging to a distinct tribe of South Sea Islanders which owed allegiance to no other ruler than their own.
 
Being aware that the king, and some others, of the San Blas knew English and Spanish, I could rely upon this almost unknown dialect to cover any secret instructions I wished to convey to my blacks.
&nbs............