Parker.) mediation of ossifications in the nasal septum.
Sometimes the ventral portions of these pads form paired or un paired little ossifications, then generally described as intercentra; such are not uncommon on the tail.
The fowl possesses all five ossifications at birth, and for a long while the middle piece forming the keel is by far the largest.
The skin is devoid of ossifications, but large and numerous cutaneous spines are often present, especially on the head and on the tail.
There are occasionally intercalary ossifications between the two distal phalanges (33).