“That’s so. We should have no difficulty in making out the dirigible, illuminated as she is.”
The boys lapsed into silence, straining their eyes ahead in vain.
Suddenly Harry gave a shout.
“There she is, about four points off our course to the north.”
“That’s right. That’s the dirigible, sure enough. Now, comparing her speed with that of Slade’s machine, he cannot be far off.”
“Say, we’ve been making time, all right.”
“I should say we have. But look! Something’s the matter with the dirigible.”
As Harry spoke they saw the row of lights by which they had picked the gas-supported craft out of the night suddenly waver and then begin to drop.
“They are going to descend,” cried Harry amazedly.
“Evidently. Look there!” he broke off with a sharp exclamation.