Cochlea to structures in the brainstem for further processing. The "stapes" (stirrup) ossicle bone of the middle ear transmits vibrations to the "fenestra ovalis" (oval window) on the outside of the cochlea, which vibrates the perilymph in the "vestibular duct" (upper chamber of the cochlea). The ossicles are essential for efficient coupling of sound waves into the cochlea, since the cochlea environment is a fluid–membrane system, and it takes more pressure to move sound through fluid–membrane waves than it does through air; a pressure increase is achieved by the area ratio of the tympanic membrane to the oval window, resulting in
Fantastic Beasts and Where to Find Them described hereafter are fictional and cannot hurt you." He repeats the Hogwarts motto: "Draco dormiens nunquam titillandus", Latin for "Never tickle a sleeping dragon". "Fantastic Beasts and Where to Find Them" contains the history of magizoology and describes 85 magical species found around the world. Scamander says that he collected most of the information found in the book through observations made over years of travel across five continents. He notes that the first edition was commissioned in 1918 by Augustus Worme of Obscurus Books. However, it was not published until 1927. It is now in its fifty-second edition. In the