Lotions are prepared in the following ways:-

1. By simply diluting the medicine with distilled water in the proportion of 1 in 10 or 1 in 100; in the latter case 1 1/2 fluid drachm to the pint is pretty nearly correct.

2. By diluting a glycerole of the medicine with 4 or 9 times its measure of distilled water.

3. By mixing the medicine, in the proportion of 1 in 100, with dilute alcohol, to make an evaporating lotion.