An unusual condition of the bequest was that a portrait of his dog, a Dandie Dinmont terrier named Callum, was to be on permanent display at the gallery.
[8] Cowan Smith's will stated that the Society of Antiquaries of Scotland was to have free choice of any items from his estate for their collection.
[6] The remainder of the estate, valued in excess of £55,000, was left to the National Gallery of Scotland with the interest accruing to be used to purchase works of art.
[10][11] The fund has enabled the purchase of more than 40 works including those by Turner, Goya, Constable, Rubens, Charles Rennie Mackintosh, John Singer Sargent and Diego Velázquez.
[7] The second was that a portrait of a previous (deceased) dog, Callum, by artist John Emms be on permanent display at the gallery.
[12] The unusual conditions attached to the donation have helped to draw attention to the Dandie Dinmont, which is one of the rarest terrier breeds in the UK.