The experiments of Roth-Schulz and Kovesi are most interesting. These authorities discovered, and before them H. Strauss, that the sudorific glands of nephritic patients when in increased activity can secrete a liquid that is more concentrated than the blood. Thus a compensatory action can be obtained. They hold that, through sweating, from 10 to 20 per cent. of the solids in the urine can be eliminated through the skin. It is also most important that they discovered a reduction in the molecular concentration of the blood, which, as we know, is increased in nephritic conditions. The frequency of sweating processes for persons suffering from affections of the kidneys is all the more indicated because such persons, generally, have a pale and very dry skin, the temperature of which is, as a rule, diminished. To this great amelioration of the kidney functions by perspiration is also due the fact that gouty patients are much relieved after frequent sweatings. As already mentioned we attribute gout to an alteration of the tissues of the kidneys, by which uric acid is retained. By diverting the end-products of the nitrogenous bodies to the skin and relieving the kidneys of a part of this strain, we may also improve their condition and thereby the gouty element. At the same time, in consequence of these procedures, the excretion of urine has much increased; and this has been going on for several days, not only after the bath, but after the sweating. By such an increased diuresis the condition of gout can also be much improved, as everything that improves the kidneys improves that. From the observations of Haig, the elimination of uric acid is rendered more difficult by reason of the presence of common salt; the increased elimination, therefore, through the skin must necessarily be more advantageous in the case of gouty people. There can be no doubt that sweating processes are of great benefit, not only to the kidneys, but also to the other organs, such as the liver.