"Well, what is your idea?"
"Haven't any at the present; but something will turn up."
And something did turn up that very day.
Now it should be known that Mole, although he passed the greater time with his old friends, had taken a small cottage close by so that he might not entirely wear out their hospitality.
He generally slept there, but spent his days with the Harkaways.
Jack and Harry called upon the old man, and were admitted to his presence, as he was putting the finishing touches to his toilet.
This consisted in anointing his bald head with some wonderful fluid, warranted to produce a luxuriant growth of hair.
This gave the youths an idea, and having invited him to dinner, they departed to carry out their joke.
All passed off pleasantly during the evening, but Jack and Harry were absent about an hour. During that time they procured access to Mole's premises, and having emptied his bottle of hair restorer, filled the phial with liquid glue, after which they returned to the house.
"I must go early," said Mr. Mole, rising. "I have to attend court as a juryman in the morning."