Originally Posted by David Hughes
I'd love to impress you all by explaining but can't without reading and rephrasing Brian Coe's excellent book 'Colour Photography The first hundred years 1840-1940' - that's not a misprint, btw. ISBN 0 904069 23 0 is the paperback version and change 23 0 to 24 9 for the 'casebound' version; I wonder if that means a slip case ...
Brian Coe's book is likely the best source for info on early color processes extant.
BTW, the "casebound" version, the one I have, is what we yanks call "hardback". It is cloth bound (brown) with text only on the spine (gold) and a full color dust jacket.