A day or two later on the doctor was seated with Mr. Mole.
"Mr. Mole."
"Doctor."
"Your health must be looked to. You'll have to travel."
"How, doctor?" said Mole.
"Young Harkaway is in foreign parts, and his prolonged absence causes his parents considerable uneasiness, and you must go and look after him."
Mole's eyes twinkled.
"Do you mean it?"
"I do. When would you like to start?"
"To-day."