Corrosive sublimate ʒ ss, lime-water O. j. Used externally.

These two washes depend for their efficacy on the black and yellow oxides which are formed by the union with lime-water. They are used for syphilitic ulcers. The yellow wash is the more stimulating.

Mercury, besides being given internally, is used in the form of vapor baths and inunctions. There are many preparations, and with all of them constitutional symptoms are likely to appear, and must always be watched for.

It is of great importance that the diet of persons taking mercury should be ample and nutritious.

The bowels should be kept open and the teeth should be kept clean in order to prevent salivation.

Mercurial ointment should be rubbed in with a piece of flannel and the nurse's hand must be well protected to prevent absorption.