There is good evidence that if baby is given a bottle of formula while lying flat, the formula can get into the Eustachian tubes and middle ear and cause an infection.

EARS: the membranes covering the inner ear should be either flat or slightly concave; ear abscesses are very common and can have fatal consequences if treatment is not obtained.

His voice was oddly pleasant to the ear, the well-modulated voice of a gentleman, resonant and overlaid with the flat slow drawl of the Charlestonian.