. The comparative anatomy of the domesticated animals. Horses; Veterinary anatomy. TEH APPENDAGES OF THE SKTN. 903 Fig. 488. the other vei7 close, and lodged in the papillary la\-er, which is traversed by recurrent fibres giving off tubes that pass into the nerve-eorpuscles of the papilla?. The superficial network detaches the terminal fibres that pass into these papilhe or into the stratum mucomm of the epidermis. The intra-epiderraic nerve terminations have been particularly observed in the snout of the Pig. Epidermis.—The epidermis is a thin pellicle, covering the superficial face of the de
. The comparative anatomy of the domesticated animals. Horses; Veterinary anatomy. TEH APPENDAGES OF THE SKTN. 903 Fig. 488. the other vei7 close, and lodged in the papillary la\-er, which is traversed by recurrent fibres giving off tubes that pass into the nerve-eorpuscles of the papilla?. The superficial network detaches the terminal fibres that pass into these papilhe or into the stratum mucomm of the epidermis. The intra-epiderraic nerve terminations have been particularly observed in the snout of the Pig. Epidermis.—The epidermis is a thin pellicle, covering the superficial face of the derma : it is destitute of blood-vessels, and is formed of cells which are being continually deposited on the derma ; these cells become flattened in layere as they are pushed up from the latter, and are destroyed by friction on the surface of the skin. The deep face of the epidermis is moulded on the upper surface of the derma : consequently, it lodges the papillae, and dips into the follicles and ex- cretory ducts of the glands of the skin ; its external face is not a very exact repetition of the surface of the derma, and is covered with hair. The epidermis tends to equalize, and to fill up, the depressions existing between the papilhe. Structure.—The epidermis comprises tw'o layers, which are not very distinct from each other in the Horse. The deep laj/er, or rete Malpighi {stratum mvrosum), is composed of soft, nucleated, pigmented, denticulated cells, which are sometimes attached by their fine pro- longations {pricJcle-cells) to other cells more or less distant; there are spaces between them filled with an amorphous semifluid substance. The superficial or fioni// laijer {stratum corneum), is constituted by hard, horny, flattened cells, which still contain some pigment-granules, and are insensibly confounded with those of the rete mucosum. (Where the epidermis is thick, there is seen between the two layers just mentioned, a third—the stratum lucidum—the nature of whic
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