The highest percentage of both catarrhal and suppurative otitis media occurs in children before the fifth year and it is obvious that, if progress is to be made in the prevention of deafness, emphasis must be placed on the diagnosis and treatment of otitis media in this age group.
For the sake of clarity let the age of infancy be up to 1 year. At that age the anatomy of the ear differs from that of the older child.
The auditory tube is short, being from 16 to 18 mm. long, but the breadth is equal to that of the adult. The pharyngeal orifice is on a level with the floor of the nose, and infected material consequently from the nose finds easy access to the tube. There is no angle or isthmus, and the tube is practically horizontal. The muscles are not well developed.
In the infant the tympanic