Indeed! but one can still find the ocassional exception to that partition principle, as is the case of Lorenz Fries and his treaty on balneology.
I'm also waiting for a reply from Richard Palmer, a specialist in Italian Renaissance Spas (would you believe there is such a thing?).
With the progressive digitalisation of the manuscript and incunabula collections everywhere, the systematic chase for Voynichean art fingerprints has become something of a new sport - and a fun one, at that!