Michael - I'm envious - ” You're doing rather better than me with this beautiful range, as I've only had two examples through my hands, a closed basket and a cream jug.
The material you require on Sowerby's
Venetian glass is contained in a chapter entitled
Art and Venetian Studio Glass in Simon Cottle,
Sowerby - Gateshead Glass, Tyne & Wear Museums Service, 1986, pp74 €81.
In my opinion this chapter is one of the two most important pieces on British glass published in the 20th century. It contains a wealth of primary evidence, probably because Simon Cottle knew that it wouldn't be well received. In fact it has not been received at all, but almost universally ignored, as it shows that J.G. Sowerby was producing a huge variety of Clutha-style glass in quantity for almost three years before Christopher Dresser "invented" it, and that it is quite easy to confuse the two ranges. In fact I don't think anyone really knows how to tell the difference, save for a handful of well-provenanced examples, as evidenced by the complete absence of Sowerby examples appearing on the market since the book was published. As I haven't yet dealt in Clutha-style glass and am a great fan of J.G., I like to think of Clutha as repro Sowerby - and that's probably not far from the truth!

I checked on the Internet and there is one example available for sale. Alternatively you should be able to borrow one through inter-library loan. One of Glen's CDs should have the catalogue page you need, it's in Pattern Book VIII, 1880, according to Cottle's caption.
Bernard C.
