Wow, just wow. Thanks for sharing that link to the cephalopod illustrations, Chris. They're amazing.
I am trying to figure out how Merculiano achieved such a minute and complex texture on some of those illustrations. If you click on the first one, for example, then click on "Original" in the upper right, you can get a close-up view of the reddish texture and it's mind-boggling!

Emily S. Damstra
natural science illustration
Guelph, Ontario
(519) 616-3654
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Twitter: @EmilyDamstra

On Tue, Aug 23, 2016 at 9:21 PM, Chris Gralapp <[log in to unmask]> wrote:
Here is a link to the bibliodyssey cephalopods of Naples--they are divine lithographs made in in the 1890's--artist isĀ  Comingio Merculiano


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