But in August, 1863, a new thought crossed the brain of the Confederate authorities. They then concluded that, instead of shooting bounty-jumpers as spies, they could make them serviceable to the Confederate cause by using them as stool-pigeons, and like as stool-pigeons are used to draw whole flocks into the net, so these could be used to corrupt, and bring thousands into the Confederate lines. In pursuance of this new idea, five large tobacco warehouses, on Carey Street, each three stories high, directly opposite "Castle Thunder," in Richmond, were converted into a prison, and called "Castle Lightning." In this prison, bounty-jumpers alone were put, and the rations furnished them were doubly as good as the rations furnished the prisoners in other prisons. Whenever an exchange of prisoners was possible, those in Castle Lightning were always given the preference, and, when about to leave, they were told that they should take from the Yankees as many bounties as they possibly could; that, if again sent to the front, they should desert, and bring as many others along with them as possible; that they would always be well treated, and given the best rations the Confederacy could afford; that they would be exchanged, or otherwise sent back to their homes, at the first opportunity; and that to secure safety and good treatment, when coming into the Confederate lines, they should cry out, "Bounty-jumper! Bounty-jumper!" This was told them not only when about to leave, but again, and again, and again during their stay, and the superior treatment they received while prisoners, assured them that the promises made would all be fulfilled. Within a few weeks after the return of the first batch of these bounty-jumpers to the North, the effect of the new policy began to show itself, and it steadily increased from that time onward. Hardly a day, and sometimes several times in a day, squads of Union prisoners arrived in Richmond, and were marched to Castle Lightning, who had voluntarily come within the lines, and claimed to be bounty-jumpers. Nor was there scarcely a day in which squads of these same men might not be seen leaving the prison, on their way to be exchanged, or otherwise sent back to the Union army, or direct to their homes. Like leaven, its tendency was to leaven the whole lump, as the authorities of the Confederacy believed would be the case when they adopted the policy. One such man in a company would, in time, taint the whole company; ten such men in a regiment would, in time, taint the whole regiment. When a battle is progressing, a single regiment, yea, a single company, going over to the enemy will sometimes so change the tide of battle that what seemed an assured victory, will prove a most disastrous defeat.