Upon the electrical experiments to determine the location of the bullet in the body of the late President Garfield; and upon a successful form of induction balance for the painless detection of metallic masses in the human body . he President. ^ From some cause tlien unknown a balance could n(»t be ob-tained, and the results were therefore uncertain and was discovered afterwards that a mistake had been made inthe mode of connecting the condenser. Tiie latter should havebeen connected at E F, (Fig. 13,) whereas it was placed at E(t, thus influencing oidy one, instead of l)oth, of
Upon the electrical experiments to determine the location of the bullet in the body of the late President Garfield; and upon a successful form of induction balance for the painless detection of metallic masses in the human body . he President. ^ From some cause tlien unknown a balance could n(»t be ob-tained, and the results were therefore uncertain and was discovered afterwards that a mistake had been made inthe mode of connecting the condenser. Tiie latter should havebeen connected at E F, (Fig. 13,) whereas it was placed at E(t, thus influencing oidy one, instead of l)oth, of the primarycoils. With the condenser properly arranged experiments weretried on duly 29 and 30 on tln-ee soldiers from the SoldiersHome who had l)een wounded during the civil war, namely,John Teahan, i^sa Head, and John McGill. In the case of John Teahan no results were obtaine(h Inthe case of Asa Head, who liad a, l)ucksliot in the cheek, loudand well-marked sounds were lieard in the telephone; and inthe case of John McGill, who was supposed to carry a l)ulletin his back, no results were obtained. Further efforts were then prosecuted f(.)r the improvementof the apparatus. 1 See Appeudix, note 12.* See Appendix, note 92 Further to Improve. Apparatus. Our attention had hitherto Ueen directed ehietlj to niodili-cations of the explorin<^ instrument. We n(»w investigated theeffect, upon the hearing (hstance, of the coils used to obtain al)alance. The following experiments, made July 29, 1881, hear upon the point: Fig. 14.
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