Sentence:  In February 1801 , Oersted did manage to experiment with physical apparatus and reported experiments made with a voltaic battery of 600 plates of zinc and silver and of later experiments with a battery of 60 plates of zinc and <WSD>lead</WSD> . 
Meaning of the word marked with <WSD> tags:  a soft heavy toxic malleable metallic element; bluish white when freshly cut but tarnishes readily to dull grey