Here, again, however, Leigh’s fiery impetuosity was confronted by the stubborn coolness of the American, that worthy absolutely refusing to make any movement for at least another hour.

“No, thank you, Leigh,” he said; “if yonder poor creatures are captives to the man who I firmly believe has them in his grip, all I say is just look out for squalls. You may take my word for it that before you got your foot inside the pass you would be simply riddled with bullets. I dare stake my reputation that there are not less than a score of scouts outlying all around us, and we have to thank this very substantial veil of mist for saving our lives, for the moment, at all events. In another hour the entire crowd will have got some way through the gorge, and then the scouts will draw in, and give us a chance of moving, but it would be sheer madness on our part to stir from our present position before dawn.”

“Wherever can those blackguards possibly have laid hands on the dozens of white men and women we saw in the caravan?” asked Leigh.

“Ah! now you are making a great mistake,” replied Kenyon. “There were at most only half-a-dozen white men amongst the captives, and I saw but one white woman; the rest were unfortunate creatures from one of the native tribes south of the Great Lakes, and whose habit it is to plaster their bodies with grey ashes. The first glance under this misty-looking moon deceived me, too, but I can reassure you on that score. There were, quite half-a-dozen white men amongst them, though, and as for the white woman, the less said about her the better, for she was one of the slave-drivers. I think, however, Leigh, that you are missing the main point offered to us in this affair. Don’t you see that by all the laws of reason and common-sense this caravan should be steering due east for the seaboard, and here we find slaves obviously imported from a distance (for I never heard of the grey ash colouring being practised anywhere in this latitude) being driven due west. Now, if you will take your map for what it is worth, or will question any of these frauds of ours called ‘Guides,’ you will find that there is no town of any kind in this vicinity, nothing, indeed, of any note at all within hundreds of miles, so far as is known, let alone any such thing as a slave market. Whither, then, can this immense caravan possibly be going?

“Another point that impressed itself upon my notice was the fact that the slave-drive was composed entirely of full-grown men and women (it positively did not contain one single youth or child), all of which looks as if the strongest slaves had been purposely selected for severe labour of some kind in the interior, far or near, their ultimate destination and precise occupation being what we have to find out.”

“Give me to understand your whole theory, Kenyon, and why you connect these people with my cousin,” said Leigh.

“No!” was the curt reply. “I have no theory; at least, I have as yet only the very faintest suspicion of one, and the possibilities before us are far too vast for me at present to hazard even the remotest guess at either the final result of all this, or whither our investigations will ultimately lead us; only I believe, nay, I am morally certain, that in following yonder caravan—if follow it we can—we shall be treading in the steps taken voluntarily by the remnant of the Mormons who escaped from Grenville’s vengeance in East Utah, and who were, I am equally sure, succeeded at a later date by your cousin, and probably by many of his Zulu friends, as part and parcel of just such a slave caravan as we have seen to-night. And now let us stop talking and get to work at some food, for the light is beginning to grow, and in half-an-hour’s time we ought to be ready to move. I have slipped two of our fellows into the long grass with orders to keep their wits about them, but I expect the cowards will lie so close for the sake of their own precious skins that they will see nothing, however much there may be for them to observe.”

“Ay!” said Leigh, bitterly, “I wish we had a handful of our old Zulu allies here and we would make it very warm for the slavers; but as for these wretched curs, they are not worth their salt, except to carry loads, which they will throw to the deuce at the veriest shadow of approaching danger.”

As soon as the sun had fairly risen and sucked up the mist, the camp was struck, and the entire party entered the rocky defile and proceeded to thread its dark avenues with the utmost caution, all of which, however, seemed totally unnecessary, as they nowhere saw the slightest sign of life, or the remotest indication that the stony way had ever before been trodden by the foot of man.

One thing, nevertheless, struck the Europeans as being most singular, and this was the fact that when they had penetrated a very considerable way through the gorge, and arrived at the spot where Leigh’s unfortunate accident had occurred, they discovered the roadway to be absolutely closed by the fallen tree which had so staunchly stood their friend on the occasion of their previous visit, and which was still firmly jammed endwise across the narrow rugged path.