 It was used when they had plagues, and they didn't know the plagues were caused by germs. All they knew was that the magic was in the colloidal silver, and they would rub it on themselves, they would drink it, and get rid of plagues with the colloidal silver. We sell an enormous amount of colloidal silver. It comes in, I don't know, five or six ounce jars of this, a dropper of colloidal.