become impregnated with lime-salts, and will then begin to harden, and
in a very short time you will have an excellent example of the disease
under discussion. Patients suffering from salivation fall an easy prey
to this disease, due to the action of the drug on the glands and the
hard and soft tissues of the mouth, the gums in such cases affording a
ready pocket under their edges for the deposits.

When you find a tooth with the characteristic concretion of tartar upon
it, the first principle of surgery demands that you clean that tooth
thoroughly. Go down beyond the line of the disease, go around the tooth
thoroughly, and break up the diseased tissue, and apply tincture of
myrrh, and in three days you will notice a marked improvement for the
better, and if the patient takes proper care of the teeth the disease
will not return. Practitioners should watch the teeth of the young
people under their care, and see that the mouth is kept scrupulously
clean and healthy.

In reply to a question, Dr. Riggs stated that whenever absorption goes
on irregularly, unless the inflammatory action is extreme, it will
sometimes absorb one or two bone-cells, and then skip one or two, and
these last, being isolated, naturally die, or become necrosed to
some extent. In treating this disease you must break up the line of
disintegrated tissue. You must, as it were, transfer your eyesight to
the end of the instrument, so that when you strike dead bone you will
know it. Live bone will feel smooth and greasy.

It requires some years of experience to treat this disease properly,
because you have not your eyesight to aid you, but must depend
absolutely upon the sense of touch. With experience, however, you
will learn to give a great deal of relief in one of the most annoying