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| Keywords: Life in Motion Fig 12.png en Fig 12 ”Essential part of frog interrupter used in experiment represented in Fig 11 m muscle; n nerve; c lever; when c is raised by the contracting muscle m the contacts at x and y are broken; x is a platinum where dipping into mercury and y is a contact between two platinised surfaces The arrows near the wires connecting x y show direction of current When contact is broken by lifting the lever c the bell b middle in Fig 11 rings Life in Motion or Muscle and Nervehttps //archive org/details/b21929786 John Gray McKendrick 1892 1926 Life in Motion book Galvanism | ||||
