. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. 650 SKELETON. would not be more like the clavicle (1) than bar vertebra, why not also from the equal of it is in its present situation. "u- "' i . ^ ™ , In fig. 476., the pubic bone (2) occurs op- posite to the sacral vertebral rib (1), and the Fig. 476. thoracic costo-vertebral archetype ? If the caudal bone gives evidence of the fact that its present condition is owing to the loss of the Fig. The sacral vertebra and pubic forms of the Crocodile' forming the whole quantity. whole form is thereb
. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. 650 SKELETON. would not be more like the clavicle (1) than bar vertebra, why not also from the equal of it is in its present situation. "u- "' i . ^ ™ , In fig. 476., the pubic bone (2) occurs op- posite to the sacral vertebral rib (1), and the Fig. 476. thoracic costo-vertebral archetype ? If the caudal bone gives evidence of the fact that its present condition is owing to the loss of the Fig. The sacral vertebra and pubic forms of the Crocodile' forming the whole quantity. whole form is thereby completed as the sterno- costo-vertebral-archetypal quantity. The part 2, of fig. 476., may, therefore, as appro- priately be termed a pubic rib as a costiform pubis. This pubic bone (2, fig. 476.) is sepa- rated from the sacral rib by an interval equal to the iliac bone, and this latter is regarded by a high authority * to be of costiform cha- racter ; but in the present reading I have no need to view the bone in this regard. PROP. XXXVI. Chevron bones and ribs are identical parts of the costo-vertebral whole quan- tities or archetypes. — As every part which shall appear plus upon a cervical or lumbar vertebra, such as cervical or lumbar ribs, may be referred to the original whole quantities from which the cervical or lumbar vertebrae have been metamorphosed, and gain their proper interpretation accordingly, so may those parts which now and then appear plus upon the caudal vertebras, such as " chevron bones" (4, of fig. 477.), be likewise referred to the original whole quantities from which those caudal vertebrae have been degraded. We have seen reason to interpret the caudal bone as the centrum of the vertebra, — of which vertebra ? Of the thoracic plus vertebra ; for why not of this plus archetypal form, as well as of any other form less in quantity than this archetype ? If the caudal bone be considered as a part degraded from the equal of the lum- * The a
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