The next day and a small crowd gathered in the Infirmary, where Harry led the team on this most experimental of procedures. He had soaked the Philosopher's Stone in the solution that Cassie had made for three hours, allowing the power of the Stone to infuse the mixture. Then he stirred it twelve times clockwise, and twelve times anti-clockwise, until the mixture blended perfectly. After that he took a sample and boiled off the excess liquid, adding aloe vera until he was left with a paste-like substance, which he thoroughly mixed in a pestle bowl.