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<p>[QUOTE=&quot;moreotherstuff, post: 1726492, member: 56&quot;]It looks to me like parchment paper rather than animal parchment.&nbsp; Parchment paper was introduced in 1847 (according to online sources):</p><p><br /></p><p><i>&quot;In 1847, when French scientists Jean-André Poumarède and Louis Figuier came up with a chemical treatment process for plant-based paper that kept many of the qualities of parchment.</i></p><p><i><br /></i></p><p><i>A key element of parchment paper is its treatment. As explained in the 1874 book </i>A Manual of the Chemistry of Carbon Compounds<i>, the use of sulfuric acid played a key role in giving parchment paper its distinctive qualities.</i></p><p><i><br /></i></p><blockquote><p><i>&quot;If unsized paper be dipped for a few seconds in a cold mixture of two volumes of concentrated sulfuric acid and one volume of water, and then washed with water and ammonia, the so-called parchment paper is obtained,” </i></p></blockquote><p><br /></p><p>The original map may be by Jodocus Hondius who republished Mercator&#039;s plates with additions of his own c1604.&nbsp; (Could be Mercator for all I know.) Those maps lack the vignettes to the left, but it appears there were lots of reprints, re-works, and variations.</p><p><br /></p><p>I would expect a map of that period to be on laid paper.</p><p><br /></p><p>But asking an expert is a sound idea.[/QUOTE]</p><p><br /></p>

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