Discolored paper

One of the volumes in a series of books recently acquired by the
Alexander Turnbull Library has some very dark brown staining around
the printed text that only appears on a few pages throughout the
volume. Below is a link to an image of one of those pages

    <URL:http://lists.natlib.govt.nz/~billingj/
        dark%20brown%20staining%20around%20printed%20text%202.jpg>

    **** Moderator's comments: The above URL has been wrapped for
    email. There should be no newline.

The book is from the DeBrys Petit Voyages, Latin Series,  "Regnum
Congo, hoc est, vera descriptio regni Africani",  Volume 1, Number
2, printed Frankfurt 1624.

A local print historian suspects that the staining may be caused by
binders/oils in the ink. I would be very interested if anyone can
shed any further light on the cause of the stain, and why it is so
pronounced on just a few pages, with the remainder being quite
unaffected.

Elizabeth Meek
Senior Book Conservator
The National Library of New Zealand/Te Puna Matauranga o Aotearoa
Cnr Molesworth and Aitken Streets
PO Box 1467
Wellington 6001
New Zealand


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                  Conservation DistList Instance 20:13
                 Distributed: Friday, September 8, 2006
                       Message Id: cdl-20-13-012
                                  ***