Thus inspired, well, we have encylopedias here in the colonies, too, so I
went, instead of Cassell's 1911, to Focal Press, 1960 (not printed in GB
until 1962, it says). The entries go from "gelatin" to
"gelatino-" to "gelatin-sugar process." That's it. The entry for
"gelatino-" is as follows:
Prefix once applied to certain photographic processes and materials --
eg., gelatino-bromide process, gelatino-chloride paper -- indicating the
employment of an emulsion of light-sensitive chemicals in gelatin. The
use of the prefix was more general at the time when gelatin emulsions
were replacing collodion for normal photography.
End of quote.
Also, I daresay in 1911 (1913?) platinum and dichromates
(possibly albumen?) were still in general use, and "gelatino" not yet
Of course this looking things up in old encyclopedias is dangerous. (How
long before you got out of Cassell's, Peter?) But in the 10th edition of
Dictonary of Photography (p.369, a very nice entry on gum printing, Adam),
I found mention of a formula I'd lost track of using chloral hydrate (I
had even gotten the chloral hydrate) to keep gelatine liquid so you could
use it instead of gum arabic in pigment printing. Has anyone reading this
tried that? (Luis, you heard of it? It's in your encyclopedia?
But they were quaint -- mention is tacked onto middle of a paragraph about
developing gum, not even a subhead, and the "dictionary" of course has no
index. I would never have found it again. Thanks Peter.