med. jur. It is a species of mania, by which "an idea
reproduced by the memory is associated and embodied by the imagination."
This state of mind is sometimes called delusion or waking dreams.
2. An attempt has been made to distinguish hallucinations from illusions;
the former are said to be dependent on the state of the intellectual organs
and, the latter, on that of those of sense. Ray, Med. Jur. 99; 1 Beck,
med. Jur. 538, note. An instance is given of a temporary hallucination in
the celebrated Ben Johnson, the poet. He told a friend of his that he had
spent many a night in looking at his great toe, about which he had seen
Turks and Tartars, Romans and Carthagenians, fight, in his imagination. 1
Coll. on Lun. 34. If, instead of being temporary, this affection of his
mind had been permanent, he would doubtless have been considered insane.
See, on the subject of spectral illusions, Hibbert, Alderson and Farrars
Essays; Scott on Demonology, &c.; Bostocks Physiology, vol. 3, p. 91, 161;
1 Esquirol, Maladies Mentales, 159.
Source: Bouviers Law Dictionary 1856 Edition