The contest had now entered upon a more interesting phase. It was almost certain that the rivals would take a practically identical course, crossing the American continent in the neighbourhood of the Isthmus of Panama. The lofty Andes, extending like a gigantic backbone from Colombia to Patagonia--an almost uninterrupted range 450 miles in length--presented a difficult, though not exactly insurmountable obstacle to the rival airships.

Vainly the wireless operators of the "Golden Hind" sought to "pick up" the Zeppelin. Von Sinzig had seen to that, for directly the German airship left New Zealand he gave orders that on no account were messages to be transmitted, but on the other hand, the receivers were to be constantly in use, in order to pick up any radiograms that might throw light upon the movements of the "Golden Hind."

Apart from the chagrin at the knowledge that his attempt to burn the British airship was a failure, von Sinzig felt rather elated. His deceptive report of the course he had taken from Java to New Zealand had been accepted by the authorities without question; hence no suspicion could possibly be attached to him for the burning of the Fremantle aerodrome. He was also of the opinion that Z64 was a swifter craft than her rival, and possessed another advantage--that of greater fuel-carrying capacity. Even if the "Golden Hind" did possess a higher speed, she would have to alight more frequently to replenish her tanks.

As far as the "Golden Hind" was concerned the run across the Panama was almost devoid of incident. With the exception of a distant view of Pitcairn Island--famous in connection with the mutiny of the Bounty--no land was sighted until Galapagos Group was seen ten miles on the starboard bow.

The "Golden Hind" was now re-crossing the equator. Fosterdyke, who had crossed the line at least a dozen times, in all sorts of vessels from luxuriant liners to singy tramps, and even on one occasion on board a wind-jammer, declared that there was nothing to beat an airship for travelling in the Tropics.

"For one thing you can keep cool," he added; "another, that will appeal to a good many people, is the fact that an airship is beyond reach of Father Neptune and his merry myrmidons. And the Doldrums, instead of being regarded as a terror, afford an easy passage to aircraft of all descriptions."

With the setting of the sun a thick mist arose--one of those humid tropical mists that are responsible for malaria and other zymotic diseases peculiar to the Torrid Zone.

At a couple or three thousand feet altitude, the "Golden Hind" was in pure clear air, but in the brief twilight the banks of mist as viewed from above were picturesque in the extreme.

But to the crew of the "Golden Hind" the picturesqueness of the scene was in a measure unappreciated. They were nearing land, and a fog was one of the most undesirable climatic conditions. Not only was time a consideration, but the petrol supply was running low. But for this, Fosterdyke would have slowed down and cruised around until the mists dispersed with daybreak.

"We'll have to risk it and make a descent," he declared. "Anywhere within easy distance of Panama will do, because it is a calm night and there will be little or no risk of the 'Golden Hind' being exposed to a high wind. Thank goodness we've directional wireless."