Son of John Hutton Balfour, Isaac Bayley Balfour was Regius Keeper at the Royal Botanic Garden Edinburgh between 1888 and 1922, specialising in Rhododendrons and Primulas and making improvements to the RBGE's teaching and laboratory facilities.
published
Garden, The – It’s Formation and Furnishing
•Series of Lectures – presumably by Prof. I.B. Balfour – filed with “Balfour, I. Bayley” papers – Box 4 of “Miscellaneous Papers – lecture notes, etc”
Collection is open to researchers by appointment, see (right click, open link in new tab:) https://www.rbge.org.uk/science-and-conservation/library-and-archives/visiting-the-library/
Permission required from RBGE.