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Updated: May 4, 2025
Their strongly pigmented skin, which seems to protect them from the actinic rays of the tropical sun, so noxious to Europeans, and their broad nostrils, which inhale a larger number of tubercle bacilli than the narrow nose-slits of the Northerner, are disadvantages in a temperate climate.
Black urine is generally caused by the ingestion of pigmented food or drugs, such as carbolic acid and the anilines. Amatus Lusitanus, Bartholinus, and the Ephemerides speak of black urine after eating grapes or damson plums. The Ephemerides speaks of black urine being a precursor of death, but Piso, Rhodius, and Schenck say it is anomalous and seldom a sign of death.
The frog skin was soft, pliable, and of a reddish hue, while the human white skin was firm and rapidly becoming pigmented. Leale cites the successful use of common warts in a case of grafting on a man of twenty who was burned on the foot by a stream of molten metal.
In the human species both the negative standard of castration and the positive standard of puberty alike indicate a correlation of this kind. Those individuals in whom puberty never fully develops and who are consequently said to be affected by infantilism, reveal a relative absence of pigment in the sexual centers which are normally pigmented to a high degree.
With the general diffuse pigmentation or darkening there are often the black spots, the pigmented birth marks, or the lighter ones of freckles. The latter signify some permanent or transitory adrenal inadequacy in the past, ante-natal or post-natal, of the individual, and presage the same in his future. These spots have been frequently observed to appear after an attack of diphtheria or influenza.
If absence of light is not the cause of blindness in these cases, how is it that the blindness is always associated with absence of pigment, since we know that the latter in Fishes and Amphibia is due to the absence of light? It has been shown that Proteus when kept in the light develops some amount of pigment, although it does not become pigmented to the same degree as ordinary Amphibia.
It'll take you about two days, here, getting your hypno-mech indoctrinations and having your skin pigmented, and your hair turned black. I'll notify Zortan Brend at once that you're coming through. Is there anything special you'll want?" "Why, I'll want an abstract of the reports Dalla sent back to Rhogom Foundation.
It is just a possibility that if this fish which was only 4.4 cm. long had lived to adult size, the upper side would have become pigmented under the influence of light, while the strong hereditary influence would have prevented the disappearance of the pigment from the lower side.
Now the fact that in Addison's disease in which the adrenals are destroyed there occurs a coincident increase in the black in the skin, and other evidence pointing to adrenal implication in dark complexioned white people, as well as in those possessing pigmented spots, seems to indicate the adrenals as controllers of the black and white factors.
I believe it all to be a colossal plant. Some practical joker has introduced a chemical into the water supply." "Probably," I murmured, still thinking of Sarakoff's observation. "I'm going to expose the whole thing in the evening papers; I examined a case yesterday a man called Wain and was convinced there was nothing wrong with him. He was really pigmented. And what is it but mere pigmentation?"
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