The Eardrum.-on the back of this flap is seeing a strikingly natural representation of the middle ear, the tympanum or drum, as it is frequently called. For the bottom of the tympanum is observed the Eustachian tube, through which is conveyed air from the pharynx to the middle ear. Across this chamber is seen stretched […]

THE EAR AND IT’S WONDERS.
The External Ear. – the organ of hearing consists of three parts: the external ear, the middle ear or tympanum, and the internal ear or a labyrinth. The external part of the air represented in the colored engraving is very realistic of that essential appendage to this important special organ of […]