Interesting set of samples of glass from John Ford Holyrood Glassworks 1866 here:
Quote from Science Museum Group
'https://collection.sciencemuseumgroup.org.uk/objects/co18828/collection-of-glassware-and-materials-from-john-ford
Made:
1866 in Edinburgh
Collection of glassware and materials from John Ford, Holyrood Flint Glass Works, Edinburgh, 1866, with booklet "Manufacture of Flint Glass" by Pellatt and Co.'
And a post here on social media from Edinburgh Museums showing a tumbler in uranium glass made by Holyrood Flint Glass Works c.1885-1886:
https://x.com/EdinCulture/status/1853770450708423017
Quote post:
'Day 5 #Museum30 - Glow.
Uranium glass made by Holyrood Flint Glassworks, #Edinburgh 1885-1886. Radioactive.'
(Note: To me this is a terrible photo - on black paper,doesn't show the colour of the glass properly, neither does it show the glow under uv)
More information here on Holyrood Flint Glass Works with a picture of the cutting and engraving workshop:
https://www.artisansinscotland.shca.ed.ac.uk/items/show/50
I read somewhere there was a warehouse in Edinburgh and that they stocked parian ware etc. I wonder if they were importers/merchants as well as glassmakers?
With regard to my last question above:
Link here with a list of invoices sent to John Ford for various items of pottery, porcelain, glass etc - see page 11 of 2038.
hmm, the link doesn't work but I have seen this list and I think it's from the Edinburgh Museums and Galleries. It also includes the list of letters from Leighton to Ford with a brief detail of the subject in each letter, including the one of 1839 mentioning recipe for canary glass (but not the detailed information of that request, just the subject matter):
chrome-extension://efaidnbmnnnibpcajpcglclefindmkaj/https://edinburgh.axlr8.uk/documents/34299/34299%20Museums%20and%20Galleries%20Edinburgh%20(MGE)%20Collections%20Catalogue.pdf
admittedly the list of invoices on that page 11 appear to start 1850s but it does seem to imply they were a warehouse for other manufacturers. At what date that started to be the case I've no idea.