Thank you so much for sharing Cagney.
1) I think the whole thing is here:
https://www.google.co.uk/books/edition/Treatise_on_the_Art_of_Glass_Making_To_w/fhldAAAAcAAJ?hl=en&gbpv=1&dq=oriental+green+uranium+glass&pg=PA73&printsec=frontcoverPublished by W Gillinder in 1851 in Birmingham.
The Introductory pages are interesting. Much bemoaning of the Excise duties and how that affected glassmaking and then saying 'in the last five years' things had progressed since it was dropped. i.e. he was saying this in 1851.
Also talks about a 'state of ignorance and degradation' amongst glassmakers during that period before his treatise was written and uses that to explain a lack of progress in glassmaking as well.
I read it that he goes on to say he hopes that with his treatise written it might encourage progress.
So from his writings it doesn't sound like the British glass industry was in fantastic competitive shape in the decades prior to 1851, or of a skill to be able to compete with Bohemian colour and design imports etc.
Interesting. Published 1851 the year of the Great Exhibition.
Victoria's bowls supposedly made 14 years earlier.
I suppose it's important to take into account it may not have been written from altruistic desires but perhaps also PR - just in case.
2) Topaz is mentioned in the book a few times. Here are two recipes named 'Victoria Yellow or Topaz'
https://www.google.co.uk/books/edition/Treatise_on_the_Art_of_Glass_Making_To_w/fhldAAAAcAAJ?hl=en&gbpv=1&dq=oriental+green+uranium+glass&pg=PA73&printsec=frontcover3) I can't remember the dates of manufacturing of uranium glass in the USA, thinking about Ford's letters. Does the date coincide with this treatise being published 1851 including recipes? or was it earlier (I'll do a trawl back through later).