Famously, he would emerge from his office when each newly loaded kiln was ready for firing, and scatter in handfuls of brightly coloured crystals over the raw mix, to give the impression that the special properties of his product were the result of an unidentified "magic ingredient". However, in 1845, his rival Isaac Charles Johnson succeeded in creating a similar product for J.
He was known for emerging from his office when each kiln was ready and scattering colorful crystals over the raw mix to create the illusion that his product had magical properties.  However, in 1845, his competitor, Isaac Charles Johnson, created a similar product for J.