As the two returning birds passed the marching soldiers, their riders evidently delivered some message to the captains, for the soldiers suddenly broke forward in a run, using their long cross-bows with great dexterity as jumping staves. Placing the outer end upon the ground ahead of them as they ran, they leaped and hung upon the cross-piece with their hands. The springy resistance of this tough wood imparted to them a forward motion with its rebound, and they scaled great distances at each jump. The whole company did it in concert, and they made almost as great speed as if they had been riding bicycles. The slingers were consequently left far in the rear.

Less than half way up the incline the archers stopped, arranged their bow-thongs, and selected feathered arrows from a pouch slung over their shoulders.

"They can never hit us from that distance!" I exclaimed; "a rifle would not carry so far."

"You forget the weak gravity which will bend their course down very little, and the thin air which will barely resist their flight; this is a model planet for archery," he answered. "Quick! drop behind your shield! They have fired the first volley!"

A torrent of the shafts fell all about us, and many pelted against our shields. Those which struck the soft earth of the bank sank into it and stuck there, but those which struck our steel were shivered and broken.

"Sit still and let them shoot away their arrows," I whispered. "This will soon be over."

The next volley came with a little more force, as if they had marched further up the hill. One or two arrows fell very near me, and I reached for them to examine their construction. They were made of the hollow, filmy stock of a rather tough reed, and were pointed with a chipped stone tip, which was brittle, but not harder than porous chalk.

"That stuff wouldn't pierce my two coats, to say nothing of the linked steel shirt," I sneered. "I will show them what fools they are!" and I walked boldly out to the brink and faced them. They let fly a quick volley with a concerted shout. As I saw the arrows start, I turned my back and bent down my head quickly. Perhaps a dozen of the slim reeds pelted me, and then I stooped over and gathered up as many as I could find, and broke them all in my hands before their eyes.

This sent a hum of excited jabbering through their ranks, and they fired no more. I stood watching them, and presently I grasped my two hands together and shook hands with myself, to try to convey to them the idea that we were friendly; but it must have carried no meaning to them. By this time the slingers had come up, and I retired behind my shield to await their action. The archers seemed very glad of their arrival, and yielded the foremost place to them. I noted their operations carefully, and saw them place something, which did not look like a round stone, in the pocket of their slings, and then they whirled it long and cautiously. Suddenly they discharged it with a swift movement of their bodies backward, which landed them on one knee.

"Wide of the mark!" I cried, as the missiles sailed off far to the right of us. But just before landing they bent a sharp, surprising curve, and lacked but little of hitting us behind the shields! The things they had thrown were the thin, concave shells of a large nut, and the trick of discharging them gave them their peculiar flight.

"I don't like this throwing around the corner!" exclaimed the doctor. "With a little truer aim they will be able to hit us behind anything."

"Hurry, bring your shield over behind mine, and face it the other way," said I; "then we will crouch between the two in safety."

He did this just in time, for some of the next volley actually curved around and hit his shield, but none struck mine in front. However, the shells which fell near us were of light weight, and would not have bruised us much with heavy clothing on. Presently their pelting ceased, and we concluded that they were planning something new. We decided to let them know that we were not hurt, so we emerged; and I tried throwing the shells back with my hand, but I could not control their erratic course. When they saw this they jeered at me, and I itched to treat them to just one pistol shot, only to show them what child's play their fighting was! Presently we saw what they were waiting for. Far down the road the two great birds were returning harnessed together, and dragging behind them an enormous catapult. Tied across their backs were two stout darts, seemingly twelve feet long and three inches square. Each of them had a wicked-looking barbed tip.

There was a pleased and confident jabber among the slingers and archers below as the birds arrived. The catapult was turned about toward us, and lashed tightly to stakes driven in front and behind. Then the birds were hitched to the cord of the immense bow, and they pulled it far back, until the men made it fast in a notch. The cross-piece had now become almost a half-circle, quite ten feet in diameter. The captain of a company of archers acted as gunner, and carefully adjusted the catapult, aiming it evidently at our shield. Upon seeing this we placed the two shields together, and leaned them both inward toward us, so as to make their angle with the upward course of the dart more obtuse, and thus cause a glancing blow instead of a solid impact. Crouching under the steel shelters, we awaited the dart.

Whiz-z-z it whistled up through the thin air! Bimm-m! it struck the top of our outer shield, and glanced off as we had hoped. The outer steel rattled and banged against the inner, and both shields pressed hard over against us, but not the slightest damage was done.

We went out to watch them load the second dart. They evidently saw the impotence of the glancing blow, and were noisily discussing it. A captain of the slingers was arguing hotly with the gunner, who was finally persuaded to take his aim a little lower. Then a hum of approval went through the throng.

"They do think a little, but they are not secretive!" I sneered, flopping our inner shield over flat on the ground. "Come, sit on this, Doctor, and we will lean the outer shield over us, and snuggle in between them as cosy as two oysters! Let them fondly imagine they can shoot us through this pasty soil, and keep their own counsel better after this!"

It was not a bad guess on my part; for the second dart struck the edge of the cliff, bored through the loose soil, and thumped our lower shield with a dull thud that lifted us from the ground. But the point and edges of the dart were blunted, and crumbled with the blow, and I could find no dent in the shield.

"See, the birds are returning to the city in haste for more darts!" said the doctor. But I was interested in examining the first dart, which had fallen a few hundred feet behind us. Its shaft was of roughly-hewn, spongy wood, and it weighed far less than half the mass of soft pine would on Earth. Its tip was not metal, but chipped stone—crumbly, like the arrow-heads. Either they did not know the metals, or they were too rare to be used in their arts. And it was to be supposed that they would use the hardest stone they had for arrow-heads and dart-tips.

I carried the shaft easily upon my shoulder forward to the edge of the cliff. This surprised even the doctor a little, for four Martians had been necessary to put it in place upon the catapult. It must have astonished them still more, for they were staring at me so blankly that I was tempted to toss the dart down their gaping throats!

"Give them just one dose of their own medicine!" suggested the doctor.

"Perhaps I had better teach them to keep their dangerous weapons at home," I said; and, balancing the dart easily above my head, I aimed it carefully at a dense group around the catapult. I threw my whole force into the thrust, and sent the shaft whizzing down at them. Then I staggered back, quite exhausted by the effort and gasping for breath.

"Good God! You have impaled two of them upon the dart!" cried the doctor, "and it is causing a panic in the whole army!"

And when I sprang up to look, I saw two writhing Martians, much shrunken in size and dying upon the dart. The terror-stricken archers and slingers were scattering and scurrying in every direction, regardless of the shouted orders of their captains. The foremost of the impaled men wore a beard, and was no other than the gunner of the catapult.

"I am sorry for the poor devils!" I exclaimed. "I had no idea they were so soft and tender. They have shrunk like a pricked balloon!"

"They thought they could prick us like that, and let the life ooze out," said the doctor. "There is no danger that they will shoot any more at us. The whole army is afraid that you will throw down the other dart."

Nevertheless, other companies of archers and slingers were seen leaving the palace, and the birds were already returning with two more darts. And the soldiers below were gaining courage and responding to the rallying cries of the captains, who were halloing and pointing toward the edge of the cliff, down in the direction of the cataract. I looked quickly that way, and instantly shouted,—

"To the rifles, quick, doctor! The other two birds have ascended the cliff, and are racing toward us along its edge. Take careful aim at the head of that front one. Afterward, let drive two random bullets into his body!"

Urged on by their riders, who with their hands swayed the long necks of the birds in unison with their rhythmical stride, these two-legged giraffes, with the wild look and sharp beak of an eagle, swept menacingly toward us.

"Ready now!" I cried, as the foremost came within fifty feet of us. "Fire!"

Two sharp reports almost simultaneous, with a less thunderous explosion than on Earth, but singing in a higher key and flaming vastly more, startled and terrified the Martians. Then crack! crack! bang! bang! four other shots in swift succession, followed by the terrific croaking of the wounded Terror-bird, which fell ponderously forward, kicking violently and beating the ground wildly with its head.

Seizing my broadsword in a flash, I dealt it such a blow upon the neck as quite to sever the head from the body. There was a gush of red blood; and those who have seen the antics of a decapitated chicken, may correspondingly multiply the corpse and imagine the confusion that now ensued.

"Stand ready for the second bird!" I shouted to the doctor; but on looking, I saw that the other animal refused to be urged forward, after seeing the fate of his companion. His rider was half-hearted in his efforts, and was watching the forward rider, who had been severely thrown with the bird's fall, and badly bruised by the kicking and threshing. He seemed to realize that he was in our power, and was thoroughly desperate. With a wailing cry he rushed at me with open arms, as if to embrace death, for I still held the sword. Dropping the weapon, I grappled with him, catching him about the wrists, which shrank under my grasp. He seemed to have scarcely the strength of a child; and everywhere I touched him, his flesh yielded like the flabby muscles of a fat baby. I bent him over backwards, then swung him around and caught him by the shoulders, and whirled him around my head. Finally, I tossed him over the edge of the cliff, where he landed among some bushes, and scrambled down as fast as he could, glad to have saved his life. The other rider had turned his bird back toward the cataract with all possible despatch.

"The whole army below us is now thoroughly demoralized!" said the jubilant doctor. "Many of them fled dismayed on hearing the firing, and others screamed and ran away when they saw you decapitate the bird. But your wrestling with the rider, and flinging him about like an infant, was an object lesson none of them could stay to see repeated. I saw one trembling fool slink back to cut the thong of the catapult, so that we could not use it on them. They have wholly abandoned the attack!"

"If this is the worst they can do, I will undertake to make myself king, and you prime minister here, within twenty-four hours!" I ejaculated, decidedly pleased with the idea. "And I will maintain supremacy with a standing army of a thousand Terror-birds!"

"The consciousness of superior strength always brings that desire for conquest," answered the doctor. "We must not allow it to master us, but we must push our advantage. Look! the panic of the first ones reaching the city is spreading to the new companies marching out. They are trampled over by the fleeing host, they turn and mingle with the frightened mob in one struggling, terror-stricken mass! Come, let us be into the projectile and after them. With a few booming shots above their heads, we will make them think their Thunder-gods have come!"