THE _Friendly Dæmon_, OR THE Generous Apparition; BEING A True Narrative of a miraculous Cure, newly perform'd upon that famous Deaf and Dumb Gentleman, Dr. _Duncan Campbel_, By a familiar Spirit that appear'd to him in a white Surplice, like a Cathedral singing Boy. _By Daniel Defoe._ _If by our Senses Spirits we perceive, Or from the strength of Fancy, so believe, No Fault do we commit that merits blame, If to the Publick we report the same; For whether by our Eyes we Spectres see \ Or by a second Sight, we must agree, | Things are to us as they appear to be._ / _LONDON_ Printed; and Sold by J. ROBERTS in _Warwick-Lane_. MDCCXXVI. [Illustration] _To my anonymous worthy Friend, Physician and Philosopher, whose Name, for certain Reasons, I forbear to mention._ _SIR_, I CANNOT, without great Ingratitude, forget the friendly Visits and kind Advice I frequently receiv'd from you, during, not only, a dangerous but tedious Indisposition, which surprisingly seiz'd me in the Year 1717, and, notwithstanding your extraordinary Care as well as unquestionable Judgment, continu'd upon me till the latter end of the Year --25; in which long interval of Time, the Attendance you gave me, and the Trouble you gave yourself, abstracted from all Interest, made you truly sensible of my unhappy Condition, and myself equally apprehensive of the great Obligations I shall ever be under to so sincere a Friend.