51212 'You are to watch me, for I will be visible to you.'
51213 'Yes.'
51214 '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.
51215 You quite follow me?'
51216 'Entirely.'
51217 'It is nothing very formidable,' he said, taking a long cigar-shaped roll from his pocket.
51218 'It is an ordinary plumber's smoke rocket, fitted with a cap at either end to make it self-lighting.
51219 Your task is confined to that.
51220 When you raise your cry of fire, it will be taken up by quite a number of people.
51221 You may then walk to the end of the street, and I will rejoin you in ten minutes.
51222 I hope that I have made myself clear?'
51223 '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 await you at the corner of the street.'