. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. 672 SKELETON. to correspond with the bisected vertebral centrum (6) of A. In c the laminae (4) and the ribs (8) project in the same way from the centrum (6). In c the transverse processes (7, 7) project from the lamina; (4), just in the same relative position as the acromion pro- cesses (7) project from the scapulae (4 of u). In A there are no processes corresponding with these ; but we should recollect that these processes are merely apophyses, and not as distinct elementary constituent parts of the vertebral quantity.
. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. 672 SKELETON. to correspond with the bisected vertebral centrum (6) of A. In c the laminae (4) and the ribs (8) project in the same way from the centrum (6). In c the transverse processes (7, 7) project from the lamina; (4), just in the same relative position as the acromion pro- cesses (7) project from the scapulae (4 of u). In A there are no processes corresponding with these ; but we should recollect that these processes are merely apophyses, and not as distinct elementary constituent parts of the vertebral quantity. In A the symmetrical haemal spines or ossi- cles (11) correspond to the bones of the fore- arm (11 of B). In c the ribs (8) unite at the sternal median line (10), and the ossicles (11) are not existing. In A the ventral ray is terminated by the palm 12, which is symmetrical; while in n the scapulary members are terminated by the palms 12, which are also symmetrical. These palms are lost at the point 12 of c. When we compare A with B, we find that all their parts correspond, except in this par- ticular, viz. that A produces dorsad the bones 2 and the palms ]. In B these parts are lost. When, again, we compare c with A, we find that the parts 1 and 2, as well as the parts 11 and 12, are lost to c. It is this loss of quantity which differences B and c from A. The "existence of the parts 1, 2, 4 at the dorsum, and of the parts 8, 10, 12 at the ventrum of Jig. A., renders this/g. symmetri- cal and equal at the back and venter. The obliteration of the parts 1 and 2 at the dor- SUMI of B renders the figure unequal as to back and venter. But the loss of the parts I and 2 from the dorsum of c, and the parts II and 12 from its venter, leaves this form still similar as to back and venter, although unequal to the dorso-ventral archetype (A). This difference is merely quantitative. Notwithstanding this quantitative variety between Jigs. A, B, and c, we still find them symmetrically cl
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