|Business Letter.ca - Writing a business letter involves follow a certain standard formula of writing. First comes the introduction paragraph after which comes the main body followed by the important conclusion statement. Find information on writing a business letter. Visit Business Letter.ca|| Informational|
Medical ArticlesWounds And Bruises
On this subject, I must necessarily be very brief. When a wou...
Hair Coming Off
There are many forms of this disfiguring trouble, both in the ...
Dysmenorrhea Painful Menstruation
If the disease be occasioned by uterine displacement, obstruc...
Cancer In Face
Treat as far as possible as recommended for breast cancer. ...
Ulcers Case Xxiv
The following case must not be regarded as altogether triflin...
The most successful procedure in the management of intestinal...
has great power as a local remedy in _Erysipelas_, to be appl...
See Abscess; Ankle; Armpit; Bone, Diseased. ...
The cause of this is a nervous derangement of the internal org...
Skin A Wintry
Something like an epidemic of skin trouble is often experience...
Deformities Of The Urinary Bladder The Operations Of Sounding For Stone Of Catheterism And Of Puncturing The Bladder Above The Pubes
The urinary bladder presents two kinds of deformity--viz., co...
Weight Loss By Fasting
Loss of weight indicates, almost guarantees, that detoxificat...
Difficulties In The Introduction Of The Bronchoscope
The beginner may enter the esophagus instead of the trachea:...
Influenzal infection, not always by the same organism, sweep...
The Blood Vessels
Where the Body Does its Real Eating. When once the food has b...
Where There Is A Will There Is A Way!
I have been frequently compelled to resort to these milder ap...
See Bleeding; Wounds. ...
A talisman may be described as an emblematical object or im...
This is severe pain in one part or other of the body, sometime...
Contraindications To Direct Laryngoscopy
There are no absolute contraindications to direct laryngosco...
Category: THE SKIN
Source: A Handbook Of Health
How the Nails are Made. Another trade, which our wonderful skin has
literally at its fingers' ends, is that of making nails. Indeed, every
kind of scale, armor, fur, feather, and leather coating possessed by
bird, beast, or fish was made by, and out of, the skin. Nail-making,
however, is one of its simplest feats, as it is carried out merely by
turning a little patch, or area, of itself into a horn-like substance.
This, the skin of insects, of fishes, of crocodiles, etc., does all over
the surface of their bodies; but in animals and birds only a number of
little patches at the tips of the toes harden up in this way, to form
the claws or nails; and in birds, the beak; and in some animals, the
horns. So it is quite correct to call the substance of our nails
In some animals and birds, these little horny patches at the ends of the
toes grow out into long, curved hooks, or broad, digging chisels and
scoops; but on our own fingers, they simply make a little mould over the
finger-tip. If, however, they are protected from being broken off, they
will grow four or five inches long; in fact, they are carefully trained
to do this by some of the upper classes in China, merely for the purpose
of showing that they have never been obliged to degrade themselves, as
they foolishly regard it, by working with their hands.
You can easily prove that the nails do grow constantly from the root or
base, out toward the tip, by watching, some time when you have pounded
one of your nails, how the black or discolored patch in it will grow
steadily outward toward the tip, where it will be broken off and shed.
You cannot see the softest and youngest row, or layer, of the nail cells
at the base, because a fold of skin, the nail fold, has been doubled,
or folded, over them to protect them while they are young and soft. It
is not best to push this fold of skin back too much, as, by so doing,
you may uncover the young nail cells while they are soft and tender, and
expose them to injury. The reason why there is a little whitish crescent
at the base of the nail is that the cells of the nail do not grow hard
and horn-like and transparent until they have grown out a quarter of an
inch or so from under the fold, but at first look whitish, or opaque,
like the rest of the skin.
Health Shown by the Color of the Nails. Your nails and your lips are
not really any redder, or pinker, than the rest of your skin; but the
cells forming them are clear and transparent and allow the red blood to
show through. This is why we often look at the nails and lips to see
what the color of the blood is like, and how well or badly it is
circulating. If the blood is anemic, or thin, then both lips and nails
are pale and dull. If the blood is healthy and the circulation good,
then the nails are pink, and the lips clear red. If, on the other hand,
the circulation is bad, as in some forms of lung disease and heart
disease, so that the blood is loaded with carbonic acid until it is
blue and dark, then the lips may become purplish or dark blue, and the
finger nails nearly the same color.
Next: The Blood-mesh Of The Skin
Previous: The Glands In The Skin