ys somewhat moist, dry teeth are
accordingly a bad sign.

The only advantage of yellowish teeth rests in the fact that their
dentine is, as a rule, stronger. Extremely bluish white teeth often
consist of a soft, porous and tender dentine.

Faulty structure of the teeth indicates weak bones in general.

Crippled teeth and the late appearance of teeth in infants,--that is,
not before the ninth month,--are symptoms of rachitis. Healthy children
have their teeth between the fifth and seventh months.

The teeth of diabetics become loose without any formation of tartar, (an
incrustation of phosphate of lime and saliva).

Extremely yellow teeth indicate jaundice, while reddish teeth show
hyperaemia of the dentine. Carious teeth are a result of disturbed
circulation.

The gums are also very indicative of disease. If they are of a pale pink
colour, they indicate anaemia or chlorosis; if bluish red on the edge,
they indicate tuberculosis.

Some of the most striking indications of existing disease are
demonstrated by the _neck_. By feeling the neck and carefully watching
its external appearance, the experienced scientist will obtain much
valuable information that will aid in his diagnosis, and give him
additional knowledge as to the processes going on within the body of the
patient.

The significance of the formation of the _thorax_ (_chest_) is well
known, even to many laymen. Flat chest, so-called chicken chest,
indicates imperfect development of the lungs, and when extreme, even
tuberculosis.

A flabby abdomen indicates disposition to hernia and stagnation of the
blood, frequently causing hemorrhoids or inflammation of the prostate
gland in men, and all kinds of diseases--inflammatory or catarrhal--in
women.

As to the _legs_, the so-called varicose veins are indications of weak
blood-vessels and intestinal hemorrhage, while inflamed nerves lead to
the conclusion of gouty diathesis and the danger of paralytic strokes.

The _skin_ usually affords more indications that aid in forming a
correct diagnosis than is usually recognized.

If examination were made of the excreta through the pores of an
individual during 24 hours, some conclusion might be definitely arrived
at as to any germs of disease present in the body and in course of
expulsion in this way.

All bacteria incident to detrimental processes proceeding within the
human organism, are to be found in the perspiration.

Freckles indicate a certain predispo