55. 20-30. Observe the extreme to which Poe goes in this study of terror; it is the fear of fear that oppresses Usher.
56. 2. too shadowy here to be re-stated. Note the effect of making this weird suggestion instead of a clear statement.
57. 26. Von Weber (1786-1826), a famous German composer.
58. 5. Henry Fuseli, or Fuesli (1742-1825), as he was known in England, was born in Zurich, Switzerland, and named Johann Heinrich Fuessli. He was a professor in the Royal Academy and painted a series of highly imaginative pictures illustrating Shakespeare and Milton.
59. The Haunted Palace. For notes see page 192.
60. 30-31. Richard Watson (1737-1816), Bishop of Llandaff, was for a time professor of chemistry at Cambridge University and wrote popular essays on that subject. James Gates Percival (1795-1856) was an American poet, musician, linguist, surgeon, and scientist; it is possible the reference is to Thomas Percival (1740-1804), an English physician. Lazzaro Spallanzani (1729-1799) was an Italian naturalist, distinguished in experimental physiology.
61. 22-31. All of these titles have been traced, except the last, which Poe either invented, or, in quoting, altered. Some of the works named he apparently had not read, since their character is not suited to his purpose. Jean Baptiste Louis Gresset (1709-1777) was a French poet and playwright; the two works mentioned are poems,—the first, a tale of an escaped parrot who stopped at a convent and shocked the nuns by his profanity. Niccolo Machiavelli (1469-1527) was a famous Italian historian and statesman, who wrote a celebrated treatise called "The Prince"; "Belphegor" is a satire on marriage. Emanuel Swedenborg (1688-1772) was an eminent Swedish theologian and religious mystic. Ludvig Holberg (1684-1754) was a great Danish poet and novelist; the work mentioned is one of his best known poems and has been translated into the principal languages of Europe. Flud, Robert Fludd (1574-1637), was an English physician, inventor, and mystic philosopher. Jean D'Indaginé (flourished in the first half of the sixteenth century) was a priest of Steinheim, Germany, who wrote on palmistry and similar subjects. Marin Cureau de la Chambre (1594-1675), physician to Louis XIV, who was an adept in physiognomy, and wrote a work on "The Art of Judging Men." Ludwig Tieck (1773-1853) was a German romantic novelist. Tommaso Campanella (1568-1639) was an Italian monk and philosopher, who suffered persecution by the Inquisition. Eymeric, Nicolas Eymericus (1320-1399), was a native of Gerona, Spain, who entered the Dominican order and rose to the rank of chaplain to the Pope and Grand Inquisitor; his famous "Directorium Inquisitorum" is an elaborate account of the Inquisition. Pomponius Mela was a Latin writer of the first century A.D., who wrote a famous work on geography "De Situ Orbis" (Concerning the Plan of the Earth).
61. 31. Satyrs and Ægipans: in classic mythology the satyrs and minor deities of wood and field, with the body of a man and the feet, hair, and horns of a goat; Ægipans is practically equivalent to, and is also an epithet of Pan, the satyr-like rural god.
61. 33-34. curious book in quarto Gothic: printed in the black-faced letters of mediæval times.
61. 35. The Latin title, which has not been found, means "Vigils for the Dead according to the Choir of the Church of Mayence."