224 EXPERIMENTS IN BIOLOGY. Chairs, tables, and persons moved.--Biological table-liftings in East Boston.--"Mediums," as visible human operators.--Resolve of the "rappers" at Poughkeepsie.--The unseen agent that moves tables, beds, &c.--Dancing plates, knives and forks, &c. 264 FACULTY OF IMITATION. Delivering speeches; imitating orators.--Case related by Walter Scott.--Case of a man haunted by the devil.--Effects of wine and heavy eating.--Voice heard by Judge Edmonds.--Lady in Providence who writes music by "spirits."--Diagram of the spheres, by a lady in a magnetic state. 268 UNSEEN LETTERS AND SIGNATURES. Imitating unseen letters, signatures, and languages.--Suspicions concerning Professor Bush.--Singular feat attributed to spirits. --No difficulty in raising chairs or tables.--Spirits shown by Egyptian boys.--Unbelief of practising "mediums."--School children forbidden to move tables, &c. 273 A DANCING LIGHT. Dancing light seen in Southboro', Massachusetts.--_Ignis fatuus_ seen by Dr. Derham.--Corpusants seen by mariners.-- Dampier's account of them. 274 SAILORS' OMENS. Sailors' omens and superstitions.--Devil's power in stirring up winds.--Losing a cat overboard, a bucket, or a mop. 276 LOVE CHARMS. Othello winning Desdemona by conjuration.--Execution of a young lady for giving a love powder.--Her dying confession.--A charm or an allay for love. 277 EFFECTS OF A BELIEF IN A GHOST. Effects of a belief in the reality of ghosts.--Case at the University at Cambridge.--A student frightened to death. 279 THE INVISIBLE LADY. The invisible lady in Boston.--The invisible girl in London.-- Joice Heth, the India rubber woman.--Professor Grimes's discovery among the "rappers."--Mrs. Culver respecting the Rochester rappers. 280 SORCERERS IN THE EAST. Persons killed by the enemy's fires.--Singular custom in Java. 281 SINGULAR METAMORPHOSES. Men turned into tigers by eating a certain root, and turned back again by eating another.--A tiger-man shot in the woods and recognized, after having devoured some of his neighbors.--Account of the wolf mania in Egypt and in Brittany.--A husband that lived and died a wolf. 282 PERNICIOUS ERRORS RELATING TO HEALTH. Astrology.--Vegetable oil of swallows, &c.--Cleanliness, diet, &c.--Ablution.--Ventilation.--Food.--Quality of meats. 284 THE SPIRIT LAND. INTRODUCTION.