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TRACTORS.
THAT faculty of the mind which is denominated the Imagination, has been the subject of two very elegant compositions in the English language, in prose and poetry, by Addison and Akenside. It has not wholly escaped the notice of medical writers, but merits their farther investigation. This slight Essay may, perhaps, incite others to prosecute the inquiry more fully, in order to extend the power of physicians to prevent and cure the maladies of mankind.
§.i.
In physick as well as in philosophy, to discover the cause of an effect is frequently a very nice and difficult investigation. The success of medical practice essentially depends upon this faculty of sagacious discernment. One who is carried away by every
