It’s a masterpiece madame. You say, not without a reason, that the effect of all these poisons is too quick, because in some cases we must act with some prudence. The tofana water, clean as a crystal, doesn’t leave traces on its path in the body of any being, man, or animal, which would ingest it. If the one you treat has had the honor to eat with you and if the wine that he consumes has been laced with a little of this water of rock, he’ll get home feeling fine. One month later he’ll experience a discomfort, a special anguish, and slowly it’ll be impossible for him to eat, a general weakness will take hold of him, and three months after the meal, he’ll be buried in the Christian way, because I suppose that only one of the Christian faiths will be invited to your table.