The Collaborative International Dictionary of English v.0.48:

Wood's metal \Wood's" met"al\
   A fusible alloy consisting of one or two parts of cadmium,
   two parts of tin, four of lead, with seven or eight part of
   bismuth. It melts at from 66[deg] to 71[deg] C. See Fusible
   metal, under Fusible.
   [1913 Webster]