Samuel HibbertSketches of the Philosophy of Apparitions
Or, an Attempt to Trace Such Illusions to Their Physical Causes
Part I. Sketches of Certain Opinions, Ancient and Modern, which Have Been
Entertained on the Subject of Apparitions; Part II. The Particular Morbid
Affections with which the Production of Phantasms is Often Connected; Part
III. Proofs that the Objects of Spectral Illusions Are Frequently Suggested
by the Fantastic Imagery of Superstitious Belief; Part IV. An Attempt to
Investigate the Mental Laws which Give Rise to Spectral Illusions; Part V.
Slight Remarks on the Modifications which the Intellectual Faculty often
Undergoes During Intense Excitements of the Mind; Part VI. Summary of the
Comparative Degrees of Faintness, Vividness, or Intensity Subsisting
between Sensations and Ideas, during their Various Excitements and
Depressions; Part VI. Summary of the Comparative Degrees of Faintness,
Vividness, or Intensity Subsisting between Sensations and Ideas, during
their Various Excitements and Depressions.