Heat the glycerin in a porcelain or other suitable container on a suitable bath to about 115 to 120'C. Add the sodium stearate and stir the mixture gently with a glass rod, maintaining the specified temperature until the sodium stearate is dissolved. Then add the water, mix thoroughly, and immediately pour the hot mixture into suitable molds. Allow the suppositories to cool completely before removal. If a metal mold is used, heat it in an oven and pour the hot mixture into the hot mold.