It is said, and stated with confidence, that the names of the 4000 soldiers who died in their mud-holes within the pen, and who did not generally receive any medical treatment whatever, were placed upon the hospital register, and their diseases diagnosed after death and removal from the stockade. But of this the writer is not positive, although he has seen tables of statistics of certain periods of the prison, where it is shown that every patient who was treated for disease perished. XIII. To form an idea of the awful mortality which reigned here, let us review the records of the hospital prisons, and the casualties of armies of foreign as well as our own country. These comparisons must, however, be received with much allowance, for the circumstances which led to death are very different. * * * * * In the prisons of Switzerland, before they were improved, the mortality was 25 to 35 per 1000. In the county jails of England it is reckoned at 10 per 1000; in the terrible hulks (Les Bagnes) of France it is 39 to 55 per 1000, including epidemics of cholera. The average mortality of the London hospitals, where only the severer cases of disease and accident are received and treated, is nine per cent. In the hospitals of Dublin it is less than 5 per cent.; in the civil hospitals of France it is from 5 to 9 per cent.; in the military hospitals of the same country it is much less; at Val de Grace it was 4 per cent. for a period of forty years; at Vincennes it was 2 per cent. for a long period; at the Gros Caillou, for a term of eleven years, it was less than 3 per cent. out of 55,000 patients. The mortality at Moyamensing Prison for many years was 1 per cent., and in the New York Penitentiary less than that for seven years. The average deaths in the prisons of Massachusetts, Michigan, New York, and Maryland, was about 2 per cent. The death-rate of the rebels confined in our military prisons was small, comparatively: at Fort Delaware it was 2 per cent, for eleven months; at Johnson's Island it was 2 per cent., or 134 deaths out of 6000 prisoners, for the period of twenty-one months. The loss at the rebel prison at Elmira is not known for the entire term; but it was much less than the rebel "Vinculis" desires to make it. His own statements make but 4 per cent. during the worst month for instance: "Now out of less than nine thousand five hundred prisoners on the first of September, 386 died that month." "At Andersonville the mortality averaged 1000 per month out of 36,000 prisoners, 1/36. At Elmira it was 386 per month, out of 9500, or 1/25 of the whole. At Elmira it was 4 per cent.; at Andersonville less than 3 per cent. "If the mortality at Andersonville had been as great as at Elmira, the deaths should have been fourteen hundred and forty per month, or fifty per cent. more than they were."