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[[start page]] [[top margin]]152 Jany 14th 1845 Condition of a discharging wire[[/top margin]] Repeated the experiment with the jar - needles very slightly magnetized o- -- Opened the circut in the water at [[underline]]d[[/underline]], charge about the same, all the needles +++. Repeated last experiment, all things the same. all the needles +++ Repeated same with opening at [[underline]]d[[/underline]], closed needles, all +++, but not quite as strongly as in some of the other cases. These experiments conclusively show that the several parts even of a short wire, are not at the moment of the discharge in the same electrical state relative to each other. Also that there are oscillations from one end to the other. [[figure on left]] The last experiments were varied by bringing the ends of the middle of the cross wire nearly into contact. When the jar was discharged, a spark passed between the two points at [[underline]]a[[/underline]]. [[indent]] These exp, must be made with a larger rectangle. ----------[[/end indent]] The ends of the wire [[underline]]a[[/underline]] b may be connected with earth, and in this way the disturbed electry in the wire will be dischared in one direction, and probably, the needles will be more strongly magnetized. [[end page]] [[start page]] [[top margin]]Jany 15 1845 Examination of lateral spark 153[[/top margin]] Commenced farther investigation of the lateral spark from long wire. __ For this purpose, suspended the wire [[underline]]a[[/underline]] from the long wire by twisting one end around the wire, and hanging the other by means of a fine fibre [[figure from left, across page width]] of silk to the long wire, at the distance of 1/20th of an inch. When the machine was turned, sparks half an inch long could be drawn from the long wire, but no spark was observed to pass between the small ball [[underline]]a[[/underline]] and the wire. When the wire [[underline]] b' c'[[/underline]] was arranged, as shown in the figure, by suspension, a spark was passed at each point [[underline]]b'[[/underline]] c', but the affect was much increased by drawing at the same time a spark from the wire by means of the conductor [[underline]]f[[/underline]]. [[figure across page width]] When the discharging [[underline]]d[[/underline]] was in the position [[underline]]d[[/underline]], no spark passed at[[underline]]a[[/underline]], though large one passed at [[underline]]b[[/underline]], but when the same ball and wire were placed near the other end of the suspended wire as in the position [[underline]]d'[[/underline]], sparks passed. __ This is an illustration of the exp. given by Walker page For a paper relative to lateral discharge, see Nicholson's Journal 4[[circled]]to[[/circled]] vol 1, account of Van Marums machine. [[end page]]