"That means we're just about where we're going," said Matt.
"Where'll we come down?"
"On the parade ground at the post."
When near the old fort, they could hear the call of the sentries, and were able to mark the fringe of oil lamps around the barracks and officers' quarters.
Silently, like a wraith from the Unknown, they dropped downward, struck on the bicycle wheels, and glided to a stop.
"Be hivins," cried a voice, "it's th' Comet. Now what would you be afther thinkin' av that? Th' Comet, d'ye moind, rammin' around in th' dark th' same as if it was broad day. Is that yerself, Motor Matt?"
"Yes," said Matt, stepping out of the machine. "How's Prebbles, O'Hara?"
"Th' ould sawbones has given up hope, an' that's all I kin tell ye. But who is it ye have along?"
"Prebbles' son. Take him up to Cameron's quarters at once, will you?"
"Sure I will."