For decomposing and carrying off unnatural growths, as fistula, ficus, glandular enlargements and other tumors, it is often best to dilute the _electrolytic_ quality of the galvanic current A B with one or both of the Faradaic currents, as by taking A C or A D instead of A B. But _malignant_ and _poisonous_ affections, as scirrhus and other varieties of cancer, and also cases of infectious virus, demand continually, or with but occasional exceptions, the primary galvanic current A B. ☞In treating these malignant affections, the current should be run through as short a distance of _healthy_ tissue as possible, yet so as fairly to reach the diseased part. And whether this part be brought, for a given time, under the one pole or the other, the opposite pole should be attached to the _long cord_, so as to throw the central point of the circuit, not in the person of the patient, but out on the long cord, thus bringing the entire organic parts though which the current is passed on one and the same side of the center, and so, under the ruling influence of the same pole. Those diseases which require the chemical or electrolytic currents should, for the most part, be treated under the negative pole, particularly those which need the galvanic current A B, and also old ulcers and _chronic irritation of mucus surfaces_. Glandular enlargements not of scirrhous character, and excrescent growths not poisonous, may often be reduced, and perhaps sometimes cured, under the positive pole. But my own experience, even with these affections, is that it is better to treat them under the negative pole until they come to assume, as sometimes they will, an _acute_ state, when the positive pole may be used with success. If, however, it appears desirable to produce a _cauterizing_ effect, this must be done by persistent treatment under the negative pole of a strong A B or A C current, and, if the disease be external, with a small pointed electrode. POSITIVE AND NEGATIVE MANIFESTATIONS.