Page 23 had two attachments- one tab (23.1) and one paste-down (23.2). Attachment 23.1 has writing on both sides. Attachment 23.2 only has writing on one side and is a revised version of the text about the skeletal remains of animals, which it concealed. When reading this page, one must flip up Attachment 23.1 to read the verso before continuing on with the full-page.
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