The 1923 date in Hellmers' book for transparent selenium ruby at / from Christensen Agate has puzzled me for awhile. Although Jenkins was granted a machine patent in 1924, CAC wasn't officially founded until 1925. And if the formula's source was by a glass man (Fiedler) we think was so well-known -- and Hellmers certainly knew or knew of Fiedler -- wouldn't he have noted that too, as he did on the four formulae he directly attributed to Fiedler?
Apparently the first "commercially-viable" selenium ruby was produced by Henry Hellmers at Cambridge Glass..
And what the heck. Where's Steph's "can of worms" smiley?
Oh, might as well . . . better than working . . .
I suspect that Fiedler's high reputation may not be entirely deserved. And I am not alone. You know who you are . . . Not that he wasn't good, mind you. I mean, what spectacular marbles some CACs are. And maybe by the time he got to CAC, he was given free-enough rein (and enough money) to develop their electric colors. And so forth. But consider:
Yes, Fiedler initially was at Akro Agate. But who was hired by Akro in 1921 straight out of school to replace him? Henry Hellmers. And I suspect that if, at that time, Fiedler's colors had been generally superior in any way, then Hellmers would have written down (or tried) more than four. But just a suspicion.
Sellars Peltier hired Fiedler to set up (hand-gathered) marble production at Peltier Glass. After a great deal of difficulty and expense (some of which is documented in a long and amusing letter in the Pelt safe papers, which a few others of you have also seen, and all might see someday -- including the trials & tribulations of the development of the Cerise, the Prima Agate, and the Onyx), Sellers Peltier himself took over and Arnold was . . . let go.
And we've just had a good and interesting discussion on CAC's use of Cambridge glass. And in 1930 Hellmers was hired to be the glass chemist at Cambridge. about the time CAC apparently was falling apart.
Anyway, I think there's certainly enough information now to make us wonder. Be interesting to await developments.