"You know Fremantle?" enquired the count, brusquely.

"Fairly well, mein Herr," was the reply. "I've called there perhaps a dozen times in cargo boats. The last time was in January, 1914."

"There was, of course, no aerodrome there then?"

"Assuredly no, sir."

"According to my information it is on the right bank of the Swan River and a couple of kilometres to the east of the town. It ought to be easily found."

Hans Leutter agreed that to locate it ought to be a simple matter.

"Then we'll do so, little Hans," exclaimed the count, grimly. "We might even make the Englishman Fosterdyke a little present anonymously, of course."

The ex-Unter-Leutnant grinned.

"You wish me to take the Albatross for an airing then?" he said.

"Ach, no," replied von Sinzig. "If our Albatross were invisible and noiseless, it would be different. We'll use the observation basket. Overhaul the mechanism carefully, because you, little Hans, are going to use it."