In a message dated 16/11/98 04:27:34 GMT, matttrahan@ecsu.campus.mci.net writes: << I believe a brass monkey was a square metal plate with depressions for individual cannon balls. The cannon balls were stacked in a pyramid shape. Apparently, when it was cold enough, the brass would contract more than the cannon balls, and it would contract enough to shift some of the balls off of it. >> This is quite correct. Mary in England