the mouth, often called "smoker's patches," predispose
the person who develops them to one of the most dangerous forms of
cancer, which is especially likely to develop on tissues, like those of
the mouth and tongue, which have been the seat of these sores.

+Sexual Relations, Kissing, Etc.--Contagious Sores.+--Sexual indulgence,
kissing, and other intimate contacts during the active stage of
syphilis, as has been indicated, directly expose others to the risk of
getting the disease. For that reason they should not be indulged in
during the first two years of the average well-treated case receiving
salvarsan and mercury by the most modern methods. Exceptions to this
rule should be granted only by the physician, and should be preceded by
careful and repeated examination in connection with the treatment. Under
no circumstances should a patient kiss or have intercourse if there is
even the slightest sore or chafe on the parts, regardless of whether or
not it is thought to be syphilitic.

+Articles of Personal Use.+--Persons with a tendency to recurrences in
the mouth or elsewhere should report to the physician any sore they may
discover and should watch for them. Persons with syphilitic sores in the
mouth or elsewhere should have their own dishes, towels, toilet
articles, shaving tools, pipes, silverware, and personal articles, and
should not exchange or permit others to use them.

+Secrecy.+--Professional secrecy is something to which the syphilitic is
most certainly entitled when it can be had without danger to the public
health. So long as a syphilitic in the contagious period carefully
observes the principles which ought to govern him in his relations to
others, his condition is his own concern. But there is one person within
the family who should, as a rule, know of his infection if it is still
in the contagious period, since it is almost impossible to secure
cooeperation otherwise. No matter how painful it may be, a person with
syphilis, if advised to do so by his physician, should tell husband or
wife the true state of affairs. There is no harder duty, often, and none
which, if manfully performed, should inspire more respect. For those who
will not follow his advice in this matter the physician cannot assume
any responsibility, and is fully justified, and in fact wise, if he
decline to undertake the case.

+Re-infection.+--Since it is a common misconception, it cannot be said
too forcibly that no person with syphil