Eight lectures on the signs Eight lectures on the signs of life from their electrical aspect eightlectureson00wall Year: 1903 VI.] OUTGOING EFFECTS 103 It is an easy matter in the case of an animal like the cat, to test the skin in situ. Two or three hours after death, when the muscles are no longer inconveniently excitable, a pad is cut off, and one electrode is applied to the wounded surface ; the other electrode is applied to an intact pad. The accidental Fig. 42. (4219.)—Outgoing responses of the pad of a cat's foot, directly excited by single break induction shocks in both directions,
Eight lectures on the signs Eight lectures on the signs of life from their electrical aspect eightlectureson00wall Year: 1903 VI.] OUTGOING EFFECTS 103 It is an easy matter in the case of an animal like the cat, to test the skin in situ. Two or three hours after death, when the muscles are no longer inconveniently excitable, a pad is cut off, and one electrode is applied to the wounded surface ; the other electrode is applied to an intact pad. The accidental Fig. 42. (4219.)—Outgoing responses of the pad of a cat's foot, directly excited by single break induction shocks in both directions, and by tetanising currents in both pairs of directions. current (which is not an ' injury current,' since its direction in the cat is from intact to injured spot, but the normal and accidental ingoing current at the uninjured spot) is compensated, and the blaze test applied in the usual way. Both responses are in the same direction as that of the accidental current, from intact to wounded spot, ingoing through the intact skin. These are evidently not negative variations of any injury current. We may provisionally infer from the absence of obvious injury current that the subcutaneous connective tissue is of very inert character, and that an unpolarisable electrode
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