“I wish I knew, Alf,” was the reply; “I haven’t seen it since the night we got here: ever since then it has been completely hidden by yonder white cloud, which rests upon it, and unless I am mistaken, the heat emanating from that vapour is so intense, that the everlasting snows are being absolutely melted away from the summit of the cone.”

Just then a very wonderful and awful thing happened, for even as Grenville was speaking, the heat-clouds suddenly rolled away like a scroll and curled up out of sight, revealing the glittering peak for one brief instant in all the radiant majesty of its unveiled glory, and then the very next second there shot far, far up into the azure vault, a giant jet of angry, inky-looking smoke, which floated lightly and lazily through the absolutely pulseless air towards the north, and was quickly succeeded by another great puff, and another, until the whole of the northern heavens were densely clouded, and the mountain itself bore the appearance of a gigantic monster mechanically expelling vast volumes of dead black smoke at every labouring respiration of its mighty rock-girt lungs, and shrouding the whole country in a sombre death-like pall of weird and awful shade.

“A volcano, by Jove!” ejaculated Leigh.

“Yes,” replied his cousin, “and an active one, too. I fear that Umbulanzi’s explosion, the first night we came, has awakened the slumbering internal fires, or else the water is somehow penetrating into the crater and interfering with the gases imprisoned in its abysmal depths. We shall be in a nice pickle if the volcano takes a fancy to indulge in an eruption just at present; however, we must hope for the best, old man, and put our trust in Providence.”

That very night, sad to say, our friends were awakened by the objectionable throes of a mighty earthquake; the rocks quaked and groaned, and the very bowels of the mountain were rent and torn by ear-splitting explosions, and in less than ten minutes the whole party was in full flight across the northern veldt, positively chased from the stronghold upon which they had bestowed so much labour by great streams of burning lava which, like vast rivers, flowed unimpeded down the mountain side, and, instantly setting the long grass on fire, caused our friends a most anxious time until they had safely crossed the river and got well away from the spot—their movements being rendered relatively slow by the necessity of carefully transporting the wounded men in hammocks.

After a short consultation it was decided to steer for the Hermit’s Cave again, and to try and discover a place capable of defence somewhere in the immediate vicinity of Equatoria; for, with the exception of the mountain from which they had just been so rudely expelled, our friends were assured by the natives that no natural fastness of any kind existed within a hundred miles to the south of their present location, and southwards all, both black and white, absolutely declined to move until Zero was stamped out, or until they themselves were effectually disposed of in attempting to settle with him.

A very sharp look-out would have to be kept in order to avoid falling into the hands of the slavers, who were sure to notice the eruption of the volcano, and, knowing that the little band would have in consequence to relinquish the shelter afforded by the mountain, would doubtless be outlying with a view to falling upon them unawares; but by confining the travels of the party strictly to the night-time, and lying carefully hid by day, Grenville and Amaxosa hoped to bring all safely into the desired haven.

At all events, our friends were no worse off, in consequence of their journey to the peak, having, on the contrary, inflicted two crushing blows upon the enemy, and exchanged the bare handful of men with which they left Equatoria for a small army thoroughly equipped for war, already well-tried, and thirsting for occupation in the fighting line.