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Updated: May 4, 2025
The rate at which this play of colours proceeds is so variable, and depends on so many circumstances, that no time-limits can be laid down. During the disintegration of the effused blood the adjacent lymph glands may become enlarged, and on dissection may be found to be pigmented.
The ovary was represented by a smooth, slightly elevated deep black eminence 1 cm. in length and 1-5 mm. in breadth at its upper end. These authors also mention three ducks in male plumage in which the ovary was similarly atrophied but not pigmented.
Carrington and Crocker both record cases of permanent pigmentation following exposure to great cold. Gautier is accredited with recording in 1890 the case of a boy of six in whom pigmented patches from sepia to almost black began to form at the age of two, and were distributed all over the body.
All accidental wounds in domestic animals become more or less infected by irritating microorganisms. The following symptoms occur in local inflammation. Increased heat in the part is an important symptom. It is due to the increased blood-flow to the part. Because of the pigmented, hairy skin of domestic animals, redness is of little value in locating superficial inflammation.
The fact that the skins of most animals are pigmented and covered with hair, precludes the easy detection of erythema by visual examination, consequently this indicator of possible inflammation is not often made use of in the examination of equine subjects. Attitude of the Subject.
It most often appears in the early years of life, sometimes in relation to a pigmented or hairy mole. It is of slow growth, may remain stationary for long periods, and has little or no tendency to become malignant. It is usually subcutaneous, and is frequently situated on the head or neck in the distribution of the trigeminal or superficial cervical nerves.
So the gland of energy for emergencies writes its signature always all over the skin. In an adrenal personality, the epidermis is always slightly, somewhat, or deeply pigmented. The pigmentation is due to a dark brown deposit lightly or thickly scattered over the skin.
Minor degrees of the abnormality occur: in Turbot with the hook-like projection of the dorsal fin the lower side of the head is often without pigment, while the rest of the lower side is pigmented. Less degrees of pigmentation of the lower side occur without structural abnormality of the eye and dorsal fin. There is no evidence that these abnormalities are due to abnormal conditions of life.
"In thirty cases in which alcoholic phthisis was present a dense, fibroid, pigmented change was almost invariably present in some portion of the lung far more frequently than in other cases of phthisis." Annual of Medical Sciences. "There is no form of consumption so fatal as that from alcohol.
Both the pigmented skin of the Silky and the colour in the plumage of the bankiva are dominant, so that all the offspring in F1 or the first generation are coloured fowls with pigmented skins. But in later generations I found that with regard to skin pigment there were no pure recessives.
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