. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. RUMINANT1A. 531 unip, and in the cushion-like sole-pad of the Dromedary. The hump consists essentially of adipose matter, developed in the subcutaneous areolar substance, its secreting cells having undergone an extraordinary local increase. To support such a mass, the connecting tissue exhibits a corresponding augmentation, the fibres assum- ing the character of ligamentous bands, which are firmly united below to the capitals of the bony columns of the dorsal vertebra?. In reference to the function of this growth tra- ve
. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. RUMINANT1A. 531 unip, and in the cushion-like sole-pad of the Dromedary. The hump consists essentially of adipose matter, developed in the subcutaneous areolar substance, its secreting cells having undergone an extraordinary local increase. To support such a mass, the connecting tissue exhibits a corresponding augmentation, the fibres assum- ing the character of ligamentous bands, which are firmly united below to the capitals of the bony columns of the dorsal vertebra?. In reference to the function of this growth tra- vellers have ascertained beyond all contro- versy that it serves as a store-house of nourishment, affording to the animal, in con- junction with the stomachal water-cells, a pro- vision against the inanition which long jour- neys would otherwise entail. In accord with this statement, it has been observed that the hump of the Dromedary becomes attenuated and reduced under circumstances of impover- ishment, while, on the contrary, it is marked by rapid increase and ultimate plumpness when the supply of food is abundant. The general character of the dermal en- velope in Camelidag deserves little comment; the hair is coarse and shaggy in the typical species, and of a soft woolly texture in the Auchenias, where it is also very long. At certain points it acquires in the Camel a rigid bristle-like character, this being especially manifest at the under part of the feet, near the margin. In this spot, however, the hairs are scanty, and they are entirely absent for a small space, over the so-called knees, and at the under and fore-part of the chest, where from constant pressure during the recumbent posture of the body, the cuticle acquires a horny consistency. These callosities are not present in the Llama. One of the most interesting anatomical features, forming a distinction between the two cameline genera, consists in the degree of organisation of the foot-pad and corneous in- vestment
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