Animal Drawing and Anatomy (Dover Art Instruction) by Noble Edwin

Author:Noble, Edwin
Language: eng
Format: epub
Publisher: Dover Publications
Published: 2012-08-07T04:00:00+00:00

FIG. 30. SKELETON OF A PIGEON

FIG. 31. WING OF A BIRD

FIG. 32. ARM OF A MAN

PLATE XXVII

It will be noted that the Sternum of animals is attached to the ribs only. In the bird, these latter have been strengthened by a bony projection from each rib overlapping the next behind it, forming a kind of basket work. Even so, the constant pressure of the chest muscles during flight are apt to cause undue contraction were it not for the additional support given by a stout column of bone called the Coracoid Bone. Attached to this again is the Clavicle, better known as the Merrythought. It will thus be found that the shoulder of a bird has two bones which are not present in animals, whilst the Scapula, or shoulder-blade itself, takes a very secondary place, being the long knife-like bone lying alongside the Dorsal Vertebrœ.

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