in Natural History, a name given by the Indians to their terrible poison, which kills when mixed with the blood even in the smallest quantity. They say that this gecco is a venomous froth or humour vomited out of the mouths of their most poisonous serpents; which they procure in this fatal strength, by hanging up the creatures by the tails, and whipping them to enrage them; they collect this in proper vessels as it falls; and when they use it, they either poison a weapon with it, or wounding any part of the flesh introduce the smallest quantity imaginable into it; and this is said to be immediate death.