E.H. Hall's paper discusses a new magnetic effect on electric currents. Hall notes that Maxwell's statement about the magnetic force acting on a conductor carrying a current seems to contradict the natural expectation that a magnet affects a current in proportion to its strength. Hall also notes that Prof. Edlund assumes a magnet acts on a current in a fixed conductor as it does on the conductor itself. Hall then discusses an experiment with a spiral of German-silver wire enclosed between rubber disks and placed between the poles of an electromagnet. The wire's resistance was measured before and after the magnet was applied. The results showed no significant change in resistance, suggesting that the magnet does not affect the current's resistance. However, Hall then conducted another experiment using a gold-leaf strip and a galvanometer, which showed a deflection of the galvanometer needle when the magnet was applied. This deflection was not due to the magnet's direct action on the galvanometer but rather due to a potential difference between points on the conductor. Hall concluded that the magnet's action caused a pressure on the current, but not a movement. The direction of this pressure depended on the direction of the current and the magnetic field. Hall also conducted further experiments with a copper strip and found that the galvanometer did not detect any current except for induction currents. Hall concluded that the magnet sets up a new electromotive force in the gold-leaf strip, perpendicular to the primary electromotive force. This new force is proportional to the product of the magnetic field and the current in the strip. Hall's experiments suggest that the magnet's action on electric currents is not a direct effect on the current itself but rather a pressure on the current. Hall's findings are significant as they provide new insights into the interaction between magnetic and electric fields. Hall's work is an important contribution to the understanding of electromagnetism.E.H. Hall's paper discusses a new magnetic effect on electric currents. Hall notes that Maxwell's statement about the magnetic force acting on a conductor carrying a current seems to contradict the natural expectation that a magnet affects a current in proportion to its strength. Hall also notes that Prof. Edlund assumes a magnet acts on a current in a fixed conductor as it does on the conductor itself. Hall then discusses an experiment with a spiral of German-silver wire enclosed between rubber disks and placed between the poles of an electromagnet. The wire's resistance was measured before and after the magnet was applied. The results showed no significant change in resistance, suggesting that the magnet does not affect the current's resistance. However, Hall then conducted another experiment using a gold-leaf strip and a galvanometer, which showed a deflection of the galvanometer needle when the magnet was applied. This deflection was not due to the magnet's direct action on the galvanometer but rather due to a potential difference between points on the conductor. Hall concluded that the magnet's action caused a pressure on the current, but not a movement. The direction of this pressure depended on the direction of the current and the magnetic field. Hall also conducted further experiments with a copper strip and found that the galvanometer did not detect any current except for induction currents. Hall concluded that the magnet sets up a new electromotive force in the gold-leaf strip, perpendicular to the primary electromotive force. This new force is proportional to the product of the magnetic field and the current in the strip. Hall's experiments suggest that the magnet's action on electric currents is not a direct effect on the current itself but rather a pressure on the current. Hall's findings are significant as they provide new insights into the interaction between magnetic and electric fields. Hall's work is an important contribution to the understanding of electromagnetism.