page_0049

Birds Ears
No external ear is ordinarily present as a
cortilagenous appendage, though owls at
least have a considerable flap which over
[his] the auditory apparatus. In place of the
external ear we sometimes find a set of
ear coverts, or ariculars.

The Respitory System of Birds
No other animal are so thourg permeated
with the atmosphere as are birds. In no others
are the respitory functions so energetic and
effectual. The lungs are not shut off by a diaphragm,
but extend from the apex of the chest to the
kidneys. They are divided into lobes as in mamals.
nor do they hang freely with chest, but are
fixed in the dorsal region of the general cavity,
being also imbedded in the inner spaces of
the ribs and [vertelrae]

A bird is literaly inflated with great
recepticals of air and draws a remarkbly "long
breathe" these recepticals vary greatly in extent
and disposition being found in many or
most, or all of the bones; in intermuscular spaces
throughout the cellular tissue just beneath the
[skin ed]

These substanteous cells are enormously