Publication Clarkson's Musical Entertainment 1485
The title page adds "Being a Selection of Various Tunes and Pieces of Music Adapted for the Piano Forte or Harpsichord".
The website http://hms.scot/fiddle/author/38/ suggests there are two books. The British Library catalogue contains just one 20 page volume with about 45 tunes.
This stub entry was added in response to this issue (http://my.strathspey.org/dd/issue/1394/) submitted by Finlay Forbes. So far only the tune mentioned there has been linked to this publication.