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22
Oct 26. continued

Next attached the ^ [[small horse shoe]] magnet  - see my paper no 3 - to the ends of coil no 2, which was placed on coil no 1 connected with the battery. The horse shoe became magnetic for the time, although in a fitful manner. The ends of the interposed coil no 5 was then joined, the screening influence was very perceptible, but was not perfect, since the magnet showed some signes of magnetism, notwithstanding the screen.  This is as might have been expected, since the same current which will deflect the needle is generally sufficient to develope magnetism in soft iron.
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[[image - sketch of hollow iron cylinder with attachment]] Connected the hollow iron cylinder, which is surrounded with copper wire, with the battery. Put on this helix no 2 and outside of this helix no 1, and on either side of these [[strikethrough]]helix[[/strikethrough]] coil no 3 & 4 [[strikethrough]][[for?]][[/strikethrough]], so as to screen as perfectly as possible. The ends of helix no one was connected with the long wire galvanometer. [[margin notes]] Should be no screen with galvanometer[[/margin notes]] The needle was thrown 180 degrees around at the making of contact, and the same at breaking, although the ends of all the wires and coils were joined, showing that little or no screening took place. The needle in this exp was very powerfully affected, and the screening  was not perfect with two coils, and the helix. The needle in the last trial whirled several times around at making and also at breaking.
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                                             23
Oct 28th Monday
Attempted, by putting on another coil, to render the screening more perfect, but did not succeed.
Observes that at each breaking of the battery current, which surrounds the soft iron hollow cylinder, a spark of electricity passed between the wire and the iron of the tube. Probably due to imperfect insulation, and when this is remedied the action will most probably be still more energetic. The defective screening in this case is probably due to the long wire of the wire helix offering some considerable resistance to the passage of the induced current.
Oct 28th
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[[image - sketch of a cylinder, with a wire coiled around it, with each end of the wire connecting also to a nondescript object, possibly a battery. The negative and positive symbols for polarity are noted as well.]]
Put a helix of small wire into the axis of the hollow cylinder of iron, attached the ends of the helix to the long wire galvanometer. Current from battery through wire around the hollow iron needle of galvanometer moved the same when the wire was disconnected, hence infered that the movement was produced by the magnetism of the hollow iron, although at the distance of 7 feet.
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[[margin note]] Iron does screen [[/margin note]]
Placed the galvanometer at the distance of 14 feet, so that the needle was unaffected by the magnetism of the hollow iron. The needle then remained stationary when the battery current around the iron was made and broken. --The helix of long wire was then withdrawn from the axis of the hollow iron and placed parallel with it along the outside - the needle was then slightly affected. This exp shows the screening influence of iron. No shocks could be flelt.