Pigmentation is usually most intense along the lateral edges of the dorsal leaflike mark; the central portion may be so much paler that the effect is that of a pair of dorsolateral stripes.
However, in the body, and especially in the eye, the pigmentation was not affected by the absence of light.
In such cases, with few exceptions, thepigmentation is usually more or less diffuse.
A smooth and flat nævus, consisting essentially of augmented pigmentation alone.
Upon the legs, in long-continued cases, more or less pigmentationusually remains.
From the continued irritation and scratching more or less pigmentation results.
The tendency to form segments, crescents and circles, the color, the pigmentation and ulceration, the history, and not infrequently marks or scars of former eruptions.
It is characterized by thinning and wasting, dryness, and a wrinkled condition, with more or less pigmentation and loss of hair.
Chloasma uterinum is a term applied to the ill-defined patches of yellowish-brown pigmentation appearing upon the faces of women, usually between the ages of twenty-five and fifty.
Besides this, the general pigmentation is intensified; children are whiter than adults.
They consist of a graduated series of colour-tones extending over the entire possible range of the real colours of pigmentation in human beings; and every gradation in tone has a corresponding number.
For example, I myself prepared charts of this sort for the stature, the cephalic index and the pigmentation of the population of Latium.
For instance, we may record: "Pigmentation of hair = 34 Br.
In fact, it is well known that the fundamental classifications of the human races due to Blumenbach and Linnaeus are based upon the cutaneous pigmentation (white, black, yellow races, etc.
Less degrees of pigmentation of the lower side occur without structural abnormality of the eye and dorsal fin.
Absence of the gametic factor or factors for pigmentation results in albinism, and no amount of exposure to light produces pigmentation in albinos, e.
But when we consider the pigmentation of the upper side and the normally white lower side, although the adaptation is equally obvious, the utility is by no means certain.
It is, however, curious to consider that the factor which produces intense pigmentation of the skin and all the connective tissue in the Silky fowl has no effect on the colour of the plumage in that breed, which is a recessive white.
To take first the loss of pigmentation from the lower side.
In August and September the epidermic papillae begin to be obvious, and from this time till February a continuous increase in the papillae and their pigmentation occur.
The fact that Proteus does not rapidly become as deeply coloured when exposed to light as ordinary Amphibia shows that the gametic factors for pigmentationhave been modified as well as the somatic tissues.
Another instance is afforded by pigmentation of the skin in man; which varies with the amount of light and heat from the sun to which the skin is exposed.
In the specimen to which I refer the pigmentation instead of being present on both sides was reversed: the lower side was pigmented from the posterior end to the edge of the operculum (Plate II, fig.
In the specimen we are considering the body is normal or nearly so, with the pigmentation on the left side, which is normal for the Turbot, while the head has both eyes with some pigment on the right side and the left side unpigmented.
Working people, especially those who are out in the open a good deal, have a tougher pigmentation and a browner skin, so that their flush is less obvious.
The top of the head is then dull brown, with a slightly mottled appearance caused by the different intensity of pigmentation in different areas.
At this stage, the dark lateral area is retained with intensity of pigmentation scarcely diminished.
Pigmentation is common after dysentery, and also after typhoid fever when dysentery has existed.
The mesenteric glands show signs of irritation or of absorption of specific products in hyperaemic pigmentation and hyperplasia.
Mention has already been made of gastric hemorrhages attributed to malarial pigmentation of the liver.
It calls it 'Pigmentation'--the 'pigmentation of the mature virgin.
She probably knew that she was sunburnt, for instance; but she was not aware of the depth which the dark natural virginal pigmentation of her neck, eyes, and knuckles, lent to the warm tanning of her skin.
Out of the sixteen types of zygote formed one (FfPPii) is homozygous for the pigmentation factor, and does not contain the inhibitor factor.
It is difficult to believe that the markedly different states of pigmentation which occur in the same species are not associated with deep-seated chemical differences influencing the character and bent of the individual.
Thus a bird of the constitution PPIi approaches in pigmentation a bird of the constitution Ppii, while a bird of the constitution PpII has but little more pigment than the unpigmented bird.
The Brown Leghorn, on the other hand, contains the inhibitor factor, but not the {109} pigmentation factor.
Ii, while the hen birds, though identical in appearance so far as absence of pigmentation goes, should not contain this factor but should be constitutionally Ffppii.
If an association of this kind be found, and the pigmentation factors be determined, it is evident that we should thereby obtain an insight into the nature of the units upon which mental conditions depend.
The Silky is pure for the pigmentation factor, but does not contain the inhibitor factor.
May not these differences in pigmentation be coupled with and so become in some measure a guide to mental and temperamental characteristics?
The facts are suggestive, and it is not impossible that future research may reveal an intimate connection between peculiarities of pigmentation and peculiarities of mind.
Such birds bred together gave some offspring with the full pigmentation of the Silky, some without any pigment, and others showing different degrees of pigment.
None of the F2 male birds, however, showed the full deeppigmentation of the Silky.
One of the most beneficial things to do, where pigmentation is present is to wash out the arterial system, draw blood from the veins, massage the exposed parts.
The pigmentation of the skin, no matter how small, is the condition which presents itself most forcefully, and is the most annoying to the embalmer.
The Statistical Results of Observation as Regards General Appearance, Stature, andPigmentation of Married Couples.
It will be seen that in the case of pigmentation there is not as in the case of stature a decided charm of parity in the formation of sexual ideals.
In considering from all points of view the nature of hair andpigmentation in general, we cannot help noticing a certain correlation between these two characters.
In the iris, the pigmentation assumes a particular character.
Blueskins were people who inherited a splotchy skin-pigmentation from other people who'd survived a plague.
Even in mature women who undergo ovariotomy, as Kepler found, the pigmentation of the nipples and areola disappears, as well as of the perineum and anus, the skin taking on a remarkable whiteness.
The degree of pigmentation is clearly correlated with sexual vigor.
This association of pigmentation and sexual aptitudes has been recognized in the popular lore of some peoples.
Simpson long since noted that uterine irritation apart from pregnancy may produce pigmentation of the areolæ of the nipples (Obstetric Works, vol.
Pregnancy constantly gives rise topigmentation of the face, the neck, the nipples, the abdomen, and this is especially marked in brunettes.
Thus babies of mixed black and white blood may show no traces of negro ancestry at birth, but there will always be increased pigmentation about the external genitalia.
During pregnancy this tendency to pigmentation reaches its climax.
The dependence of pigmentation upon the sexual system is shown by the fact that irritation of the genital organs by disease will frequently suffice to produce a high degree of pigmentation.
Deposits elsewhere may depend upon other conditions; but whatever their cause the pigmentation vanishes a short time after the birth.
The skin becomes smooth, and its pigmentation fades completely; but the pregnancy streaks rarely vanish entirely, although they always become very much less noticeable.
Attention may be here called to thatpigmentation of the skin and deeper-seated parts of the body, especially of the kidneys, known by the term argyria.
Although a large part of the pigmentation under such circumstances is due to the direct presence of the foreign body, the appearances are also partly the result of consequent minute hemorrhages.
The pathological pigmentation of the body results, presumably, from the metamorphosis of the coloring matter of the blood or from the introduction from without of pigments insoluble in the fluids of the body.
The hybrid chicks may be said to have the extended pigmentation dominant over interrupted pigmentation.
This differs from the formula of the Minorca only in this respect: the Jungle pattern is present, but not the pigmentation that is usually associated with it.
The Negroid resemblances are best illustrated by frizzly black hair, broad noses with depressed nasion and flaring nostrils, thick lips, and dark pigmentation (pls.
A special form of pigmentation of the skin is seen on the front of the legs of women from exposure to the heat of the fire.
Neuro-fibromatosis is frequently accompanied by pigmentation of the skin in the form of brown spots or patches scattered over the trunk.
A blank cartridge fired at close range may cause a severe wound, and, if charged with black powder, may leave a permanent bluish-black pigmentationof the skin.
Soldau believes that the pigmentation and overgrowth of the epidermis in moles are associated with, and probably result from, a fibromatosis of the cutaneous nerves.
In some cases molluscum fibrosum is associated with pigmentation of the skin and with multiple tumours of the nerve-trunks.
Pigmentation or darkening of the middle line of the abdomen begins by the eighth or twelfth week, and a dark band about 1/8 of an inch wide extends from the pubis (bone) to and around the navel or even higher.
The pigmentation (coloring of the skin) varies from the light yellow to dark brown, olive or black.
For that blue pigmentation in your eyes and fingers is due to the Sarakoff-Harden bacillus which closes once and for all the chapter of medicine.
It is only pigmentation caused--er--caused by some harmless germ.
Studies on the Variability and Heritability of Pigmentation in Oenothera.
Blueskins were people who inherited a splotchy skin pigmentation from other people who'd survived a plague.
Conophis lineatus concolor, on which the dark pigmentation on the body apparently is secondarily lost, is an exception.
In specimens in which the paravertebral stripes do not begin on the anterior-most part of the body, there is no paravertebral pigmentation anteriorly.
Specimens having dark stripes on the body always have black or dark brown pigmentation on the first, 4th and 7th dorsal scale-rows.
In this group the color pattern is characterized by the high frequency of ventral spotting, darkening of part of the supralabials, dark pigmentation on the 1st scale-row, and more than four dark stripes on the body of adults.
Snakes having a larger number of dark stripes and more dark pigmentation occur in the southern part of the range.
There is, nevertheless, at any one locality considerable variation in the amount of darkpigmentation present on the chin and supralabials, thereby indicating that the slight geographic trend in this character is not significant.
The influence in most cases, animal and human, which produces pigmentation is exerted by the nervous system through the vascular supply.
Pigmentation often seems only a consequence of local continuance of such disturbance.
From comparative {494} anatomy and physiology the influence of the nervous system overpigmentation has been very well illustrated.
Pigmentation occurs very commonly as the result of neurotic conditions.
In a few cases the enlargement of the abdomen has been accompanied bypigmentation and the areola of the nipple has also become pigmented.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "pigmentation" in a variety of sentences. We hope that you will now be able to make sentences using this word. Other words: color; coloration; coloring; illumination; lithography; staining; tint
