Mr. Barton's case, could have been chosen. The statement is, however, medically imperfect, The report of an intelligent physician, who had marked its progress, and attended the patient, from its earlier stages to its close, would have supplied what is wanting to enable me to pronounce with confidence. I should have been acquainted with Mr. Barton's probable hereditary pre-dispositions; I should have known, possibly, by very early indications, something of a remoter origin of the disease than can now be ascertained.
"In a rough way, we may reduce all similar cases to three distinct classes. They are founded on the primary distinction between the subjective and the objective. Of those whose senses are alleged to be subject to supernatural impressions—some are simply visionaries, and propagate the illusions of which they complain, from diseased brain or nerves. Others are, unquestionably, infested
