"There is then a means?" asked Bell.
"A sure means," answered the doctor.
"I said so," cried Johnson, rubbing his hands; "with Dr. Clawbonny, we need not despair; he always has some invention handy."
"Not always handy; but after thinking for a while—"
"Doctor," interrupted Altamont, "can't the bears get through the passage-way you cut?"
"No, I took the precaution of closing it behind me; and now we can go from here to the powder-magazine without their suspecting it."
"Good! Will you tell us what means you intend to employ to rid us of these unpleasant visitors?"
"Something very simple, and which is already half done."
"How so?"
"You'll see. But I forgot I didn't come alone."