The exterior of the horse . ortions of the apparatus,cause irritation. At the inferior part of the nostril, on the floor and a little anterior to thepoint of continuity of the skin and the mucous membrane, is found the externalorifice of the lachrymal duct, giving exit to the tears in their passage throughexcretory apparatus and offering such characteristics that it cannot be mistakenfor a pathological alteration. It is ordinarily single, but may be double andeven triple. Its form is round, its edges perpendicular, commonly aiWed punched-ou(, and the liquid which exudes is limpid and transpare
The exterior of the horse . ortions of the apparatus,cause irritation. At the inferior part of the nostril, on the floor and a little anterior to thepoint of continuity of the skin and the mucous membrane, is found the externalorifice of the lachrymal duct, giving exit to the tears in their passage throughexcretory apparatus and offering such characteristics that it cannot be mistakenfor a pathological alteration. It is ordinarily single, but may be double andeven triple. Its form is round, its edges perpendicular, commonly aiWed punched-ou(, and the liquid which exudes is limpid and transparent. A cartilaginous septum, the septum nasi, separates the nasal fossae into rir/kfand left. It is covered by the mucous membrane and is related to a lamina 62 THE EXTERIOR OF THE HORSE. of fibro-cartilage covered by mucous membrane, and extending from the superiorturbinated bone to the deep face of the internal ala. In a physical examinationthis lamina must be unrolled, for it is often the seat of pathological Fig. 24.—Examination of the nostril. State of the Mucous Membrane.—The nasal mucous mem-brane, in a state of health and of rest, is of a rosy color. After acertain amount of , it becomes bright red, more or less ,according to the plethora of the subject. It is paler and more follic-ular upon the branch of the aforesaid lamina of cartilage. Let us onlyindicate here that in a i)athological state it may be pale yellow, leadenas in glanders, infiltrated, and may present on its surface ulcerations,pustules, small red spots, petechia, chancres, decortications, cicatrices,tumors, etc. All these symptoms pertain to diverse diseases concern- LATERAL FACES OF THE HEAD. 63 ing which we cannot occupy ourselves in this book. Let us limit our-selves to saying that the most serious of all is farcy-glanders, whichshould be particularly observed, and in the diagnosis of Avhich theminute examination of the maxillary lymphatic glands must not beneglected.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjecthorses, bookyear1892
