The cures enumerated in Mrs. Pratt's list would be marvellous enough if the slightest credit could be attached to the lady's wild statements. De Loutherbourg's treatment of the patients who flocked to him was undoubtedly founded on the practice of Mesmer, though Horace Walpole appears to draw a distinction between the curative methods of the two doctors, when he writes to the Countess of Ossory in July 1789: 'Loutherbourg the painter is turned an inspired physician, and has three thousand patients. His sovereign panacea is barley water. I believe it is as efficacious as mesmerism. Baron Swedenborg's disciples multiply also. I am glad of it. The more religions and the more follies the better: they inveigle proselytes from one another.' In a subsequent letter he writes, in reference to a new religion advocated by Taylor the Platonist:--'He will have no success. Not because nonsense is not suited to making proselytes--witness the Methodists, Moravians, Baron Swedenborg, and Loutherbourg the painter--but it should not be learned nonsense, which only the literate think they understand after long study. Absurdity announced only to the ear and easily retained by the memory has other guess operation. Not that I have any objection to Mr. Taylor for making proselytes: the more religions the better. If we had but two in the island they would cut one another's throats for power. When there is plenty of beliefs the professors only gain customers here and there from rival shops, and make more controversies than converts.' This letter was also written to the Countess of Ossory. It was hardly in so free a vein on such a subject that the writer would have ventured to address Miss Hannah More; with whom Mr. Walpole was fond of corresponding about this period.