- Their method . . . was to administer arsenic to a boar, and, so soon as the poison began to take effect, hang the animal up by the heels. Convulsions supervened; and a froth, deadly and abundant, ran out from his jaws. It was this froth, collected into a silver vessel, and subsequently transferred to a bottle hermetically sealed, which constituted the liquid poison.
— Sax Rohmer, The Romance of Sorcery
Kanlaon 