CHAPTER XVI. Page 291

Origin of the crescent as the Turkish ensign--Apparitions dispelled by philosophy--Fairy rings--Musical instruments classed under three divisions--Mixed instruments--Theory of wind instruments--The Jew’s harp--The statue of Memnon--An interesting experiment--The flute--The whiz-gig, &c.--Echoes--The whispering gallery in the dome of St. Paul’s--The speaking trumpet--The invisible girl--Other acoustic amusements--Creaking shoes--Haunted rooms