They must have seen us on the top of the wall. “Fools that we were to go there!” exclaimed Orme.

Next instant he started back, not a second too soon, for through the hole where his face had been, flashed a spear which struck the ground beyond the archway. Also we heard other spears rattle upon the bronze plates of the doors.

“No luck!” said Orme; “that’s all up, they mean to break in. Now I think we had better play a bold game. Got your rifles, Sergeant and Doctor? Yes? Then choose your loopholes, aim, and empty the magazines into them. Don’t waste a shot. For heaven’s sake don’t waste a shot. Now—one—two—three, fire!”

Fire we did into the dense mass of men who had dismounted and were running up to the doors to burst them open. At that distance we could scarcely miss and the magazines of the repeating rifles held five shots apiece. As the smoke cleared away I counted quite half-a-dozen Fung down, while some others were staggering off, wounded. Also several of the men and horses beyond were struck by the bullets which had passed through the bodies of the fallen.

The effect of this murderous discharge was instantaneous and remarkable. Brave though the Fung might be, they were quite unaccustomed to magazine rifles. Living as they did perfectly isolated and surrounded by a great river, even if they had heard of such things and occasionally seen an old gaspipe musket that reached them in the course of trade, of modern guns and their terrible power they knew nothing. Small blame to them, therefore, if their courage evaporated in face of a form of sudden death which to them must have been almost magical. At any rate they fled incontinently, leaving their dead and wounded on the ground.

Now again we thought of flight, which perhaps would have proved our wisest course, but hesitated because we could not believe that the Fung had left the road clear, or done more than retreat a little to wait for us. While we lost time thus the mist thinned a great deal, so much indeed that we could see our exact position. In front of us, towards the city side, lay a wide open space, whereof the walls ended against those of Harmac itself, to which they formed a kind of vestibule or antechamber set there to protect this gateway of the town through which we had ridden in the darkness, not knowing whither we went.

“Those inner doors are open,” said Orme, nodding his head toward the great portals upon the farther side of the square. “Let’s go see if we can shut them. Otherwise we shan’t hold this place long.”

So we ran across to the further doors that were similar to those through which we had just fired, only larger, and as we met nobody to interfere with our efforts, found that the united strength of the three of us was just, only just, sufficient to turn first one and then the other of them upon its hinges and work the various bolts and bars into their respective places. Two men could never have done the job, but being three and fairly desperate we managed it. Then we retreated to our archway and, as nothing happened, took the opportunity to eat and drink a few mouthfuls, Quick remarking sagely that we might as well die upon full as upon empty stomachs.

When we had crossed the square the fog was thinning rapidly, but as the sun rose, sucking the vapours from the rain-soaked earth, it thickened again for awhile.

“Sergeant,” said Orme presently, “these black men are bound to attack us soon. Now is the time to lay a mine while they can’t see what we are after.”