Baker demonstrated that the cider of Devonshire contained lead, while that made in other parts of England did not. He further showed that it was common practice in Devon to line cider presses with lead, and proved that lead poisoning was the cause of Devonshire colic. He was responsible for the abandonment of lead in the making of cider presses, and thus for the disappearance of the colic. See also his paper in Med. Trans. Coll. Phys. Lond., 1768, 1, 175-256. Facsimile reprint, 1958.