Eye.
The punishment of boiling criminals to death was not inflicted solely
for such a crime as poisoning. It was a common punishment for coining.
See _Annales Dominicanarum Colmariensium_ in Urstisius, Ger. _Illust.
Script._, vol. ii. p. 12.; and Ducange, in verb. _Caldariis decoquere_.
I believe instances of it will also be found in Döpler, _Theatrum
Poenarum_; and it will be seen by a reference to Ayala, _Cronica del Rey
Don Pedro_, that this was the favourite mode of putting to death all
persons who had offended him, employed by that monarch, who is best,
and, as I think, most truly, known in history as "Peter the Cruel."