. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. Development of the horns in the Fallow Deer. (From Cuvier.) entitled a " sore" by sportsmen. After this date the upper part of the brain or shaft becomes more palmated, and irregular serra- tions or " snags " are produced at the margin (<7) ; the animal is now a " buck of the first head," and, as age advances, the snags en- large, and take on, more or less, the appear- ance of true antlers. In the Rein Deer the horns undergo a similar metamorphosis ; they are of great size in both sexes,
. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. Development of the horns in the Fallow Deer. (From Cuvier.) entitled a " sore" by sportsmen. After this date the upper part of the brain or shaft becomes more palmated, and irregular serra- tions or " snags " are produced at the margin (<7) ; the animal is now a " buck of the first head," and, as age advances, the snags en- large, and take on, more or less, the appear- ance of true antlers. In the Rein Deer the horns undergo a similar metamorphosis ; they are of great size in both sexes, but are some- what less branched and slender in the fe- male ; the brow-antlers are much prolonged forward over the forehead. The nature of the anatomical change which takes place in the adult individual during the periodical renewal of the antlers, is characterised by, and contemporaneous with, the following phenomena; — a strong determination of blood to the head takes place at the spring of the year, and the vessels surrounding the frontal apophyses enlarge. This increased vascular action re- sults in the secretion of a fibre-cartilagi- nous matrix, manifesting itself externally by a budding, commencing at the summit of the " core," at the spot where the horns of the previous season had separated. In the early condition the horn is soft and yielding, and it is protected only by a highly vascular periosteum and delicate integument, the cu- ticular portion of the latter being represented by numerous fine hairs, closely arranged. From this circumstance the skin is here termed the " ; As development goes on, a progressive consolidation is effected, — the ossification proceeds from the centre to the circumference and a medullary cavity is ultimately produced. While this is taking place a corresponding change is observed at the surface. The periosteal veins acquire an enormous size and by their presence occasion the formation of grooves on the subja
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