"To do nothing whatever. There will probably be some small unpleasantness. Do not join in it. It will end in my being conveyed into the house. Four or five minutes afterwards the sitting-room window will open. You are to station yourself close to that open window."
"Yes."
"You are to watch me, for I will be visible to you."
"Yes."
"And when I raise my hand—so—you will throw into the room what I give you to throw, and will, at the same time, raise the cry of fire. You quite follow me?"
"Entirely."
"It is nothing very formidable," he said, taking a long, cigar-shaped roll from his pocket. "It is an ordinary plumber's smoke-rocket, fitted with a cap at either end, to make it self-lighting. Your task is confined to that. When you raise your cry of fire, it will be taken up by quite a number of people. You may then walk to the end of the street, and I will rejoin you in ten minutes. I hope that I have made myself clear?"
"I am to remain neutral, to get near the window, to watch you, and, at the signal, to throw in this object, then to raise the cry of fire and to wait you at the corner of the street."
"Precisely."
"Then you may entirely rely on me."