All metals do not conduct heat at the same rate, as may be proved by
holding in the flame of a candle at the same time, a piece of silver
wire, and a piece of platina wire, when the silver wire will become too
hot to hold, much sooner than the platina. Or, cut a cone of each wire,
tip it with wax, and place it upon a heated plate, as (a fire shovel,)
when the wax will melt at different periods.