organ, rubbing well into the creases and folds under and back of head and
clear to the body. 4th. Leave ointment on three or four hours. Remember:
It is best to use _Pro-Ven_ immediately after exposure; never delay more
than two hours if possible. _Pro-Ven_ is not a cure--it is designed to
keep men from getting disease; it can be used as a lubricant and
preventive both before and after exposure. _Pro-Ven_ is harmless and will
not cause pain or injury to the sexual organs. Insist upon having
_Pro-Ven_. At all good druggists, or directly by mail, 25 cents a tube; 5
tubes, $1.00. Booklet mailed free upon request. The Pro-Ven Laboratories,
Washington, D.C. This product has been tested and approved by the
Pennsylvania State Department of Health Laboratories."

In addition to _Pro-Ven_, the following proprietary tubes of
self-disinfecting ointment have, to my knowledge, been authorised by the
Department of Health, and samples were sent to me:--

_Procaline_, manufactured by the Hawthorne Drug Speciality Co.,
Inc., 88-90, Reade Street, New York City.

_Cargenios_, manufactured by H.K. Mulford Company, Philadelphia.

_Andron_, manufactured by Andron Hygienic Co., 120, W. 32nd St.,
New York City.

_Sanitube_, manufactured by the Sanitube Co., Newport, R.I., U.S.A.

Excellent printed directions and pamphlets accompany these tubes.--E.A.R.]

It has been found that the 30 per cent. to 33 per cent. calomel ointments
(and suppositories) are not suitable in all cases; and careful