Electro-physiology and electro-therapeutics : showing the best methods for the medical uses of electricity / By Alfred C. Garratt.

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From most reliable researches, then, it is fairly demonstrated, that the circulation of tlie blood through the smaller vessels and capillaries can be controlled by moderate electric currents artifi- cially applied; and hence the very natural inference, that the ordinary native or animal electric currents, which always exist in the living and healthy human body, are as constantly influ- encing the circulation of the blood. By such means the blood circulation may be deranged; so also may the various secretions from the blood be influenced. The diseases, alterations, or de- viations of the blood are arranged by Dr. Simon in four classes, viz.: — The first is where the fat and fibrine are increased, while the corpuscules are diminished; as observed, for instance, in acute and severe inflammations of serous tissues, and as in acute rheumatism. In the second class the corpuscules are increased, while the fibrine is diminished, as in typhus, small pox, and cerebral hemorrhage. The third class comprises those cases or conditions in which both the fibrine and corpuscules are below par, and decidedly deficient, while the water of the blood is increased ; as observed, for instance, in anemia, carcinoma, scrofula, chlorosis, and the true cholera. The fourth class embraces those in which new matters are contained in the blood; as, for instance, in Bright's disease of the kidneys, and in all cases of chronic rheumatism, or wher- ever bile, or urea, or any other substance poisons the blood. Occasionally fat, and under certain circumstances a great variety of minute particles of other matters, may be observed in the human blood, by the aid of a good microscope. Therefore we know that the blood may be actually altered in material and cpiality, and therefore may sensibly change the working of a part, or of the whole of the electro-nervous batteries of that individual organism. And conditions which are so manifestly electro-nervo-pathological, as well as humoral, are known to be, in part at least, corrected by means of iron, quinine, phos- phorus, and sulphur; or by farinaceous or animal food, exer-