^* A dark paint used for the mixing of earthy colours.

^* By the eighteenth century a wider range was available, though hog’s bristle was still the main type used.

^* Turner is referred to in Gillray’s cartoon Titianus redivivus;–or–the seven-wise-men consulting the Venetian oracle; he appears on a portfolio of sceptics of the method attacked by a monkey. Later in his career, however, he did become obsessed by Venetian glazing systems, some critics say to his detriment.

^* This is from a genuine historic document. The Sandby ‘doodle-do’ song, along with the Gillray cartoon, is one of the main public responses to the incident.

^* Titianus redivivus;–or–the seven-wise-men consulting the Venetian oracle. A copy of this Gillray cartoon is owned by the British Museum.