"Here's his name and this is his bell and tube! Which would you do first, ring or blow ?" "My dear," said I, "you don't blow up those tubes.

We must ring the bell, just as if it were an ordinary front-door bell, and instead of coming to the door, some one will call down the tube to us." I rang the bell under the boarder's name, and very soon a voice at the tube said: "Well ?" Then I told our names, and in an instant the front door opened.
"Why, their flat must be right here," whispered Euphemia.

"How quickly the girl came!" And she looked for the girl as we entered.

But there was no one there.
"Their flat is on the fifth story," said I."He mentioned that in his letter.

We had better shut the door and go up." Up and up the softly carpeted stairs we climbed, and not a soul we saw or heard.
"It is like an enchanted cavern," said Euphemia.