content: On 21 to 24 October 2019 I travelled to Chapel Hill, North Carolina, USA to give several lectures at the University of the North Carolina. The costs of the visit were met by Scottish Heritage USA (an organisation that recognises and enhances the original bonds of ancestral and national character among the peoples of Scotland and North America of 315 North Page Road, Building 2, Suite 10, Pinehurst, NC 28370). [Registered 16 November 2019]