Detecting ink under paint

Index

"Offsetting" is when some ink or paint from a page gets transferred to another page by contact. This webpage investigates cases of offsetting between the first and last pages of the quires.

Nature of offsetting

Offsetting could happen when the ink or paint was still not completely dry, or (more often, apparently) when the paint became soft again because of spills.

Offsetting

Moved by the recent discussion, I went through all transitions between successive quires of the VMS looking for instances of "offsetting": paint or ink from one page that got transferred by contact to the facing page, that is, the page that is in contact with it when then book is closed and all fold-outs are folded in. In summary, there are clear instances of offsetting in almost all such quire transitions that still exist. However, they are not cases where the Painter closed the book or stacked quires with the paint still wet. In all cases the transfer clearly occurred some time after painting. In one case, water seeping between the pages softened some red paint, which then stuck to the facing page. In all other cases, there was no transfer of pigment. Rather, some component of the paint somehow transferred to the facing page. The most common type of offsetting is due to a certain dark blue-gray paint. The offsetted image is a light gray stain with sharp edges, but only along the edges of the painted source area, not in the interior. In one case, that smudge includes some dark particles. That blue-gray paint seems to be a mixture of some dark ingredient, which causes the stain, and a lighter and more vivid blue paint, which never stains. Maybe the grey component was deliquescent, or food for mold? A few other cases of offsetting are caused by other paints (red and vivid green). In these cases, the offsetted image is a very very light tan stain with fuzzy edges. In one case, the same blue-gray paint created two offsetted images, separated by ~8 mm. In another case, there the offsetted images are rotated relative to their expected position by about 30 degrees. The colors must have been applied when the manuscript was unbound -- a pile of bifolios -- since there are several examples where the painting extends into the binding gutter. Or beyond it, as in the well-known case of f78v and f81r. On the other hand, Rene reports that microscopic examination of f42 shows that at least some of the green paint was applied after the folio numbers were written. Hence after the bifolios were incorrectly folded and nested, including f78v and f81r. So, here is my guess for how the VMS we see today was created:

  1. The Scribe(s) wrote the text on the parchment, and drew the outlines of the illustrations in the same ink with the same quills. The bifolios already had the future folds and were grouped into quires, but are still unbound. Each section was scribed in one or more episodes separated in time, possibly by several years. Cosmo and Zodiac were scribed in that order, before Bio. Pharma was scribed before Herbal. Otherwise the order of scribing of the sections is uncertain.

  2. Decades later, the book, still a collection of unbound bifolios, was in possession of another owner, who could not read it and could not consult the Author. This person defined the ordering and nesting of the bifolios and the order of the quires, and wrote the folio numbers accordingly. At this point the incorrect shuffling and ordering of pages became crystallized. But he still kept the bifolios unbound.

  3. The figures were painted. The Painter was careful to let the paint dry thoroughly before re-folding and re-stacking the folios.

  4. The book, still unbound, was kept for a long time in a damp place. During this time some components of some paints migrated to the facing pages. Some quires were shifted once or twice during this time, so that the same painted area created two offset stains, or stains in "wrong" positions.

  5. The book was bound, as per the written folio and quire numbers.

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Last edited on 2025-10-27 11:06:53 by stolfi