"Would you be afraid we'd get lost if we went alone?"
"Well, I don't know. I would carry a map, and if we did stray into unknown regions, I'd ask a bobby to set us right."
"What is a bobby?"
"A policeman. They have such nice, big, kind policemen here; they are always so ready to help one."
Jack made no comment and presently left the room.
"Where is Jack?" asked Mrs. Corner as they were about to go to dinner.
No one knew. Nan had been the one who saw her last. "She wanted me to go to Hyde Park with her," she told her mother, "but I said I was too tired."
"Do you suppose the little monkey could have gone off by herself?" asked Mary Lee.
"I am sure I don't know. I verily believe that is what she has done, the minx!" exclaimed Nan. "She asked me whether I would be afraid of getting lost in such a big city, and I very innocently told her I would trust a policeman to set me right, so no doubt she has serenely gone off to follow out my suggestion."
Mrs. Corner looked alarmed. "That child alone in this great city! Almost anything could happen to her."