"Not he," replied Peter. "In fact he wasn't asked. Fosterdyke went for him bald-headed and tried to make him admit that he was in von Sinzig's pay. But nothin' doin', even when we made out that we were going to drop him overboard. Well, cheerio, old thing."

Left in charge of the airship, Kenyon pondered over the problem of whether the man he had rescued had really been a secret agent of von Sinzig or otherwise. If he were, then it would be almost a foregone conclusion that he spoke German.

Kenneth had plenty of time for reflection during his "trick." The "Golden Hind" was making good progress. There was little or no wind, and her drift was in consequence almost imperceptible; while the temperature was so constant that there was no necessity to alter the volume of brodium in the ballonets for hours at a stretch. The motors, too, ran like clockwork, and beyond attending to the semi-automatic lubricators occasionally, the air-mechanics on duty had little to do. Fosterdyke, having paid a brief visit to the navigating room, retired to his cabin to make up arrears of sleep.

"Might work," soliloquised Kenneth, reflectively. "I'll tackle Fosterdyke about it next time I come across him."

At four in the afternoon Malta was passed at a distance of ten miles to the south'ard. The "Golden Hind" was doing well, maintaining more than her normal cruising speed. If she were able to keep on at that rate she would accomplish the voyage of circumnavigation well under the twenty days; but that was now but a secondary consideration. At all costs von Sinzig's Z64 must be overhauled.

The "Golden Hind's" first stop was at Alexandria, sixteen hours after leaving Gibraltar. She made a faultless landing on sandy spit that separates Lake Mareotis from the Mediterranean. The time of her arrival had been notified by wireless, and all preparations had been made for her reception. Keenly interested Tommies manned the trail ropes and secured her firmly to anchors buried in the sand; lorries laden with petrol and oil were rushed to the spot, and the work of refuelling began without delay. While Fosterdyke and Kenyon were signing the "control certificate" and holding an informal reception of almost the whole of the British Colony at Alexandria, Bramsdean remained in charge of the airship.

In order to keep back the dense crowd, composed of fellaheen, Copts, Arabs, Syrians, and representatives of every nation bordering on the Mediterranean, strong picquets of British troops were posted round the tethered airship, no unauthorised person being permitted to approach within a hundred yards of the "Golden Hind"; while to enable the work of refuelling to proceed as rapidly as possible, the improvised aerodrome was brilliantly illuminated by portable searchlights mounted on motor lorries.

It seemed as if it would be impossible for any suspicious characters to approach the airship without being detected. Having once been "bitten," Fosterdyke was not taking chances in that direction.

No attempt had been made to get rid of Enrico Jaures. Closely watched by a couple of the crew, he was even permitted to view the proceedings from an open scuttle in one of the compartments on the starboard side.

When everything was in readiness to resume the voyage, Fosterdyke and Kenyon shook hands with their entertainers and crossed the guarded square. As they approached the entry port on the starboard side a dark figure suddenly appeared from behind an unattended lorry, and at a distance of ten paces fired half a dozen shots in rapid succession straight at the baronet.