house Koku had seen nobody lurking about at all. The fact
remained that, earlier in the evening, somebody had made a close
surveillance of the Swift house, but the mysterious marauder had
not come back.

"All right, Koku. Keep your eyes open. I expect that enemy may
return sometime. Too bad," he added to himself, "that I didn't
get a better look at him."

"Koku know him next time," declared the giant.

"Why! you didn't even see him this time," cried Tom.

"See him boots. See marks him boots make. Know him boots.
Waugh!"

"'Waugh!' yourself," returned Tom, shaking his head. "You are
altogether too sure, Koku. You couldn't tell a man from his
bootprints in the mud."

"Koku know," said the giant, just as confidently. "Wait. Him
catch--see--show Master."

"Don't you go to grabbing every stranger who comes around the
house or the works for a spy, and make me trouble. Remember now."

Koku nodded gravely and went away. When he met Rad suddenly in
the hall with Mr. Swift's breakfast tray, the giant said "boo!"
and almost cost the old colored man the loss of the tray.