I received a correspondence from Mr. Greener yesterday. Unfortunately, he was unable to open the photos I enclosed, so I've re-sent them in another format. I don't expect to hear from him for a few days as I suspect he's at the Scone Palace Game Fair this weekend. He confirmed that the gun was begun on 1 May, 1894 and completed on 26 July, 1895. I'm in the midst of a major project right now with an impending deadline, but if I can get the time, I'll take a photo of the water table. I'm happy to share the info I get from Greener's when I hear.