Of course it is not known, never can be known, how many millions of dollars, nor how many thousands of lives the adoption of this policy by the South cost the North; nor can the South ever know the amount of advantage which they derived from adopting the policy; but that it was a new mode of warfare, and showed great shrewdness on the part of those who conceived and carried out the project, all will agree in admitting. Having thus shown how the Confederate authorities used Union prisoners to benefit their own cause, we will next proceed to state some additional facts as to the abuse received by other Union prisoners. The facts which we now purpose to state are not from hearsay, not from one-sided newspapers, nor from partisan historians, but directly from the lips of one who had occasion to visit Confederate prisoners frequently during the war, whose whole soul was in, and with, the Confederate cause, and who could not be, and would not be, by any who knew him, accused of sympathy with the "Yankees," as he usually styles Union soldiers when speaking of them. We have not space to write of all, and will limit our remarks to only four of the many places throughout the Confederate States at which Union prisoners were confined. _First_.--"Libby Prison." This was located in Richmond, and had been a tobacco warehouse previous to its use as a prison. It was an immense brick building, three stories high, rough floors, no plastering, a great number of windows, no fire-places, and no means for heating other than for the office on the first floor. In this, hundreds of Union prisoners were thrust and kept for weeks, months, years--some with scarcely enough clothing left to cover their nakedness, and with no chance for a change; many without a blanket, even in the coldest winter weather; all without beds, or mattress, or anything but the hard floor to lie upon. Their ordinary daily ration consisted of a loaf made from one pint of corn-meal and one pint of rice soup. Occasionally, though rarely, they would have bread made from wheat flour and soup made from meat and bones. Once in a great while they were served with meat, but the quantity served to each man was so small that it could be taken at a mouthful. Our informant says he knows of a certainty that some _actually starved to death_--that others _actually froze to death_--that many were _wantonly shot_ while thoughtlessly looking out of the windows, by sentinels on the sidewalks, who had positive orders from Lieutenant Turner, the officer in command of Libby, to shoot any "d------d Yankee" whose head might be seen at the window-bars; and that hundreds, yea, thousands, died from sickness brought upon them by the privations from which they suffered. We could give other details, but they are too horrible to write, and would be too sickening to read.