"Hell beneath! might be a more appropriate exclamation," the doctor laughed. "But, seriously, Mr. Pender, this is what I propose to do—with your permission."
"Of course, of course," cried the other, "you have my permission and my best wishes for success. I can see no possible objection, but"
"But what?"
"I pray to Heaven you will not undertake this experiment alone, will you?"
"Oh dear, no; not alone."
"You will take a companion with good nerves, and reliable in case of disaster, won't you?"
"I shall bring two companions," the doctor said.
"Ah, that's better. I feel easier. I am sure you must have among your acquaintances men who"
"I shall not think of bringing men, Mr. Pender."
The other looked up sharply.
"No, or women either; or children."
"I don't understand. Who will you bring, then?"
"Animals," explained the doctor, unable to prevent a smile at his companion's expression of surprise—"two animals, a cat and a dog."
Pender stared as if his eyes would drop out upon the floor, and then led the way without another word into the adjoining room where his wife was awaiting them for tea.
II
A few days later the humorist and his wife, with minds greatly relieved, moved into a small furnished house placed at their free disposal in another part of London; and John Silence, intent upon his approaching experiment, made ready to spend a night in the
