Their palms met and clasped, a moment, in the firm grip of a compact between two strong men, unafraid. Then each drew his pistol, crouching there at the windows of the pilot-house.

"Hear how that bullet sang?" questioned the Frenchman. "It was notched—a notched slug, you understand. That is a familiar trick with these dog-people of the Beni Harb. Sometimes, if they have poison, they dip the notched slug in that too. And, ah, what a wound one makes! Dum-dums are a joke beside such!"

Another shot sounded. Many cracked out along the dune. All up and down the crest of the tawny sand-hills, red under the sun now close to the horizon, the fusillade ran and rippled. On Nissr, metal plates rang with the impact of the slugs, or glass crashed. The gigantic Eagle of the Sky, helpless, received this riddling volley as she sagged ashore, now almost in the grip of the famished surf.

"Yes, the ball is opening!" repeated Leclair, with an eager laugh. His finger itched on the trigger of his weapon; but no target was visible. Why waste ammunition on empty sand-dunes?

"Let it open!" returned the chief. "We'll not refuse battle, no, by Allah! Our first encounter with Islam shall not be a surrender! Even if we could survive that, it would be fatal to this vast plan of mine—of ours, Lieutenant. No, we will stand and fight—even till 'certainty,' if Allah wills it so!"

A sudden burst of machine-gun fire, from the upper starboard gallery, crashed out into the sultry, quivering air. The kick and recoil of the powerful Lewis sent a fine, swift shudder through the fabric of the wounded Eagle.

"There goes a tray of blanks," said the Master. "Perhaps that will rout them out, eh? Once we can get them on the run—"

Leclair laughed scornfully.

"Those dog-sons will not run from blanks, no, nor from shotted charges!" he declared. "Pariahs in faith, despoilers of the Haram—the sacred inner temple—still this breed of Rafaz (heretic) is bold. Ah, 'these dogs bare their teeth to fight more willingly than to eat.' It will come to hot work soon, I think!"

Keenly he scanned the dunes, eager for sight of a white tarboosh, or headgear, at which to take a pot-shot. Nothing was visible but sand—though here, there, a gleam of steel showed where the Arabs had nested themselves down in the natural rampart with their long-barreled rifles cuddled through carefully scooped rifts in the sand.