Organon salutis. An instrument to cleanse the stomach. As also divers new experiments of the virtue of tobacco and coffee: how much they conduce to preserve humane health / By W[alter] R[umsey] of Gray's Inne, Esquire.

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Organon salutis. An instrument to cleanse the stomach. As also divers new experiments of the virtue of tobacco and coffee: how much they conduce to preserve humane health / By W[alter] R[umsey] of Gray's Inne, Esquire. Public Domain Mark. Source: Wellcome Collection.