I want the explosion of one ball to scare anyone who may be sleeping there half out of their senses, and make them rush out of the house; which will leave plenty of time for the other ball to set on fire anything that it may light upon.

Twenty fires, starting at once at different spots, will create a fearful scare.

Many of the guards outside the prison--all of whom are drawn from the slums--will have come from that quarter and, as they have no idea of discipline, will, when they see the flames mounting up, leave their posts and rush off to see to the safety of their homes.
"Choosing a windy night, you may be sure that the fires would burn fast, and that the rest of the volunteers, and the National Guard, would soon be so busy that they would not trouble themselves about the prison, one way or the other.

Thus I calculate that, of the fifty men on guard round the prison, there would not be twenty left at the outside; and they would be so busy staring at and talking of the fire that, with a sudden surprise, they could all be disposed of without difficulty.

Then the gates of the prison would be blown in, and we should rush in, shoot down all the warders we meet--keeping one only as a guide--make straight for the rooms where your father and Patsey are confined, release them and as many others as the time will allow, telling them to rush down to the wharf and seize boats, or to escape in whichever way they like; while you, with your father and Patsey, would make straight down to our boat; while I, with the boys, would follow you and cover your retreat, if any of the Blues came up to pursue you." "Leigh, you are a genius!" Martin exclaimed, bringing his hand down on the lad's shoulder with a force that almost knocked him from his seat.
"What do you think of that, Desailles, for a plan?
I told you that I relied upon Leigh's head more than my own, and you see I had good reason for doing so.