“To illustrate this further, we may mention another important point here. Carnivorous animals have atrophied, inactive sweat glands, whilst man and herbivorous animals possess well-developed sweat glands. There is no doubt, therefore, that _the herbivora must have preceded the carnivora in point of time_—the carrion feeders being the connecting link between them.[12] The carnivora have retained the sweat glands as atrophied (rudimentary) organs, and as a sign of their origin, but have given up the habit of sweating, or, in other words, have adapted their skin to the changed conditions of feeding. An animal whose food contains large quantities of urea as well as of creatin, creatinin, xanthin, hypoxanthin, guanin, etc. (the early stages of uric acid), and thus increases the quantity of urea and uric acid already present in the body, must take care always to keep these substances in solution. But the urea and uric acid can only be dissolved in comparatively large quantities of warm water (blood). Such an animal must, therefore, be exempt from the possibility of suddenly losing a large part of its blood and tissue fluid by sweating—or else a precipitation of the above substance will take place. Nor should an organism allow of any sudden cooling down of portions of the skin—such as might be caused by evaporation of the sweat, or else a precipitation would again take place. In a word, such an animal must not be subject to sweating, or else it would be troubled with acute and chronic rheumatism, gout, etc.... [12] This is most interesting. It shows conclusively that at one time there were _no_ carnivora on this globe: they merely developed through countless ages, as the result of deprivation and lack of their proper and natural food. “Now as man _is_ subject to sweating, it is evident that he was not intended to live on flesh, but on vegetables, or rather on fruits, for he was never meant to live on cereals.... Man may eat a limited amount of meat and cereals without doing himself much harm; but he must always remember that they ought never to form his principal food. “As soon as it is really understood that we were never intended to live on flesh and cereals, the uric acid diathesis as a trouble of mankind will disappear. We must, of course, not forget to restrict the consumption of common salt and to use such vegetable foods as are rich in food salts, and not those which are rich in albumen; for a diet consisting of bread, pulses, and cereals, and potatoes will tend to produce gout just as much as a diet consisting of flesh, fish and _caviare_....”[13] [13] “Natural Hygiene,” by H. Lahmann, M.D., pp. 76-85. It is only by reason of the excessive functioning of the liver that we are not soon poisoned, as the result of such food, and when this organ is constantly over-taxed, as it often is, for a lifetime, it is apparent that it must sooner or later break down, and be ruined from overwork.