"Now for it!" cried Leonard, as the first party came into the line of fire.
Soa sprang backwards with a yelclass="underline" again the piece thundered out, and the canister screamed through the air. It tore along the advancing files, then, striking the beaten earth, rebounded and caught those who were following with the ricochet, and with awful effect. Whole groups were mowed down by this one discharge, the destruction being twice as large as that caused by the first shot, for at this greater range the canister found room to spread. Also the rebounding missiles flying hither and thither among the crowd did no little execution. Down went the men in heaps, and with them the planks they carried. They had no more wish to storm the slave camp; they had but one thought left, the thought of safety, and the survivors of them fled in all directions, yelling with fear and fury.
"Load up, load up!" cried Otter, lifting the charge of powder which lay at hand. "They will try to break open the gates and get out, then they will cut us off."
As he spoke they saw many men run from the auction–shed to the water–gate. But it could not be climbed, the key was gone, and the massive bolts and beams were not easy to break. So they brought hammers and a tree–trunk which had supported an angle of the shed, and battered at the gate. For two minutes or more it held, then it began to give.
"Swift! swift!" cried Otter again as he dragged at the cannon to turn it, "or all will yet be lost."
"Hurry no man's ox, Black One," said Soa, as she laid the gun with the help of Peter.
A cry went up from the slavers; the gate was tottering, but it still held by the upper hinges. A few more blows and it must surely fall. But those blows were never struck. Again Soa sprang backwards, and the roar of the gun was answered by the screams of the slavers as the shrapnel ploughed through them.
Of those who were left the most part fled for shelter to the auction–hut and to the Nest itself. Some ran across to the magazine, but appeared to be unable to enter it, for soon they were seen flying back again, while about a dozen of the boldest remained at the gate trying to complete its destruction. On these Leonard and Otter opened fire with rifles, but it was not until three or four of them had fallen that the rest fled to join their companions beneath the shelter of the sheds.
"Oh! look, look!" said Juanna, pointing to the east.
It was indeed a spectacle never to be forgotten.
The dense reeds, measuring twelve to fifteen feet in height, had been fired far to the east of the Nest, and as the wind gathered to a gale and the fire got firmer hold, it rolled down upon the doomed place in billows and sheets—a sea of flame that sometimes spouted high into the air and sometimes ran swiftly along the ground.
The reeds crackled and roared like musketry as the fire ate into them, giving out thick volumes of smoke. At first this smoke had passed above the spectators, now it blew into their faces, half choking them and blotting out the sky, and mixed up with it were showers of sparks and fragments of burning reeds brought forward on the wind.
"The house and sheds will soon catch now," said Leonard; "then they must take refuge in the open spaces, where we can deal with them," and he nodded towards the gun.
As he spoke tongues of flame darted into the air, first from the thatch of the shed, then from the roof of the Nest. They were afire.
"We must be careful, Baas," said Otter, "or the slave–shelters behind us will burn also, and all those in them."
"Heavens! I never thought of that," answered Leonard. "Here, Father, if you wish to do a good work, take some of these people and the buckets they use to water the slaves. Let three or four men get on to each roof and extinguish the sparks as they fall, while others bring them water from the moat."
The priest sprang up and set to the task, at which he laboured gallantly for two long hours. Had it not been for his efforts, the sheds and the slaves in them must have been burnt, for the sparks fell thick upon the dry thatch, which caught again and again.
Now the sights and sounds grew more and more fearful. Maddened with fear, the remainder of the slave–drivers and their servants rushed from the flaming buildings, striving to escape from the fire. Some flung themselves desperately into the aloes and prickly–pears on the inner rampart, and, climbing the palisade beyond, escaped into the marsh, while some collected on the open space, and at these the gun was fired from time to time when the smoke lifted. Others again ran to the dike of the slave camp begging for mercy, there to be shot by Otter, who never wearied in his task of revenge. From behind them also rose the hideous cries of the slaves, who believed that they were about to be burned alive, and screamed as they dragged at their manacles.
"Oh, it is like hell!" said Juanna to Leonard, as she buried her face in the grass that she might see no more, and to escape the suffocating smoke. She was right.
So the time went on. One by one the roofs of the various buildings fell in, and spouts of flame shot high into the air to descend about them in a rain of sparks. But at last the cries ceased, for even the slaves could yell no more; the fire grew less and less, and the wind dropped. Then the sun rose on the scene of death and desolation. The morass was swept bare to the depth of many hundred yards, and the camp was a smoking ruin strewn with the dead. The walls of the Nest still stood, however, and here and there a charred post remained. Everything else was gone, except the magazine, which had escaped the flames, being built of brick and stone, and roofed with tin.
The adventurers looked around them in silence, then they looked at each other. What a spectacle they presented in the clear light of the morning, as they stood by the gun which had done them such signal service! All were begrimed with smoke and powder, and their clothes were burnt by the falling sparks. Leonard's throat was a mass of bruises, his hands and face were bleeding, and he was so stiff and hurt that he could scarcely move. Soa's hair was singed and cut by the bullet which had shaved her head; the priest's robe hung in charred threads, and his hands were blistered with fire; Juanna's broidered Arab dress, torn by the brutal hand of Pereira, scarcely retained a trace of white, and her long dark locks were tangled and powdered with bits of blackened reed. All were utterly exhausted—that is, all except Otter, who advanced to speak to Leonard, begrimed and stripped to the waist, but fresh and fierce as ever.
"What is it, Otter?" he asked.
"Will the Baas let me take these men," and he nodded towards the freed slaves who had belonged to the Settlement, "and hunt through the camp yonder? Many of the devils still live, and wounded snakes strike hardest."
"As you like," answered Leonard. "Arm them with anything you can find, and search the camp thoroughly. But be careful."
In ten minutes Otter was gone with the men. Then Leonard and the others fetched water and washed as best they might, the guard–house being assigned to Juanna and Soa, who made their toilet with the help of a comb they found in it. There also they discovered food, the rations of the sentry, of which they ate with such appetite as they might, and a plentiful supply of meal for the slaves.
As they were finishing their breakfast Otter returned unharmed, though of the men who accompanied him five were missing. With him also were two of the four Settlement men who had been sent to fire the reeds on the previous night. They were much exhausted, for their task had been no easy one, and fortunately for Leonard it was only after long delay that they succeeded in it. Their two companions were dead: one had been taken by an alligator in the water, and the other had fallen into a deep hole in the morass, and, striking his head against a log, was drowned there.
"Is it finished?" said Leonard to the dwarf.
Otter nodded. "Some are dead and some are fled," he answered; "but from these last we have little to fear, for they believe that an army has come against them. Still that is not all the tale, Baas. We have taken one of them alive. Come and look at him, Baas."