As to the joke, or rather attempt to joke, made by his learned friend (Mr. Campbell) on the father judging of diseases from the water of his patients, he would tell him that a very great man had made a large fortune from his success in that practice and who always judged in that way; he meant Dr. Meyersbach.
The JUDGE here interrupted the learned Counsel, and desired he would not quote as an authority the most errant quack that ever infested this or any country, who came over from Germany with a nostrum which he pretended would cure the tooth ache, which he for some time offered at 1s. until some one said to him, if you continue to sell at a shilling you will do no good; ask hald a guinea, and people will believe that it may be efficacious. He did so, found it answer his purpose, and then without knowledge enough to enable him to feel a pulse, he set up as a physician, and pretended to judge of the complaints of those who were fools enough to apply to him, by sight of their water. On this subject there was a curious anecdate, which at some time he might relate to them. (the Counsel.)
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Source: Chester Chronicle 30 April 1819, Page 4