The little man followed with the leap of a cat, and gave a grunt of satisfaction. This was his aim, to make ground, and Jack saw it in an instant. It allowed another man to come round the turn and support the assault with a long spear. The second Kachin was crouching low, and at the next moment the shining head of a spear darted past the first assailant and was directed at Jack's thigh. Jack avoided it by a miracle. He did not see it, did not know the man had struck at him, for he was too busy cutting and parrying with the leader. But as the spear-head was darted at him, he sprang aside to avoid the dah, and so dodged both sword and spear.
The Kachin with the spear had made his stroke so heartily, and with such certainty of reaching his mark, that on missing his blow he sprawled forward. Mr. Haydon bent down, gripped the strong shaft behind the spear-head, and tore the weapon from the baffled Kachin's grasp. Then, with a growl of satisfaction that he could take a share in the fray, he reversed the long weapon, and swung its keen point forward.
The spear came to his hand at a most opportune moment. A third man was creeping on hands and knees beside the wall, aiming to pass his leader. He gripped a huge knife in his hand. In another instant he would have seized Jack by the ankles and dragged him down, had not Mr. Haydon driven the spear into him with such force that the head was completely buried in his body. He dropped to the floor with a frightful yell, and at that moment the leading Kachin gave way and leapt back among his friends. Jack had half cut through the swordman's right arm, and the latter could no longer wield the heavy dah.
"Come back a few steps, Jack!" cried his father. "They are meeting us on the flat, and that is to their advantage."
Father and son darted up half a dozen steps from the landing, gained the sharp turn above, then faced about again. But no Kachin was following them. The little men chattered and yelled, argued and disputed with each other, but did not advance. Finally, they retired to the vault below, taking their fallen with them.
"First round to us," breathed Jack. "How strange they brought no muskets with them! My dread from first to last was of a bullet being loosed into us."
"I observed as they crossed towards the door that they carried only spears and swords," said his father. "That is U Saw. He wishes to take us alive, wounded, perhaps, but still alive. So he forbade shooting."
"What next?" murmured Jack.
"I wish we knew," replied his father, "then we might be prepared for it." But no preparation within their power could have availed against the cunning of the next assault. They had been watching and waiting half an hour or more in the darkness, when again the red shine of fire began to glow on the walls below them.
"What is this?" muttered Mr. Haydon. "This light is far too strong for torches." And now with the gleam of fire came gusts of heat sweeping up to them, and clouds of thick pungent smoke. Half choked, and with smarting eyes, they watched for the fire to appear. Presently they saw it below them, and saw that a furnace of leaping flame was advancing towards them, flame which filled the whole of the space, licking walls, roof, and floor. They watched it with horrified eyes. It was impossible to meet this subtle and dreadful enemy with spear or dah.