."[8] The two packets
of letters were merely imaginary, unless the pseudonymous signatures of
some of the missives may have aided contemporary readers to "smoke"
allusions to current gossip. At any rate the references are now happily
beyond our power to fathom.

Apparently the taste for Duncan Campbell anecdotes was stimulated by the
piquant sauce of scandal, for beside the several issues of "A Spy upon
the Conjurer" a second and smaller volume of the same sort was published
on 10 May, 1725. This sixpenny pamphlet of forty pages, entitled "The
Dumb Projector: Being a Surprizing Account of a Trip to Holland made by
Mr. Duncan Campbell. With the Manner of his Reception and Behaviour
there. As also the various and diverting Occurrences that happened on
his Departure," was, like the former work, couched in the form of a
letter to a nobleman and signed "Justicia." Both from internal
evidence[9] and from the style it can be assigned with confidence to the
author of "A Spy upon the Conjurer." The story, relating how Mr.
Campbell was induced to go into Holland in the hope of making his
fortune, how he was disappointed, the extraordinary instances of his
power, and his adventures amatory and otherwise, is of little importance
as a narrative. The account differs widely from that of Campbell's trip
to the Netherlands in the "Life and Adventures" of 1720.

Soon after the publication of "The Dumb Projector" Defoe also made a
second contribution to the now considerable Duncan Campbell literature
under the title of "The Friendly Daemon: or, the Generous Apparition.
Being a True Narrative of a Miraculous Cure newly performed upon ... Dr.
Duncan Campbell, by a familiar Spirit, that appeared to him in a white
surplice, like a Cathedral Singing Boy." The quotation of the story from
Glanvil already used by the prophet's original biographer, and the keen
interest in questions of the supernatural displayed by the writer, make
the attribution of this piece to Defoe a practical certainty. Evidently,
then, Eliza Haywood was not the only one to profit by keeping alive the
celebrity of the fortune-teller.

The year 1728 was marked by the reissue of the "Life and Adventures" as
"The Supernatural Philosopher ... by William Bond," whose probable
connection with the work has already been discussed, and by the
publication in the "Craftsman"[10] of a letter, signed "Fidelia,"
describing a visit to Duncan Campbell. The writer, who professes an
intens