Note 98 — Chapter IX
Reading edition
Professor Sully, to quote a recent instance, in his work on Illusions in the International Scientific Series (ed. 1887), devotes less than a page and a half to the discussion of the sensory hallucinations of normal life, and sums up the subject by saying that "when not brought on by exhaustion or artificial means, the hallucinations of the sane have their origin in a preternatural power of imagination" (p. 117).