About
The Polypus blog is culled from 12 boxes of periodicals and ephemera purchased at the sale by auction of a personal library of rare books and what the catalogue described as ‘unusual mathematical and drawing instruments’ held in flat 33 Museum Chambers, High Holborn London 15 Oct 1997.
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The Polypus 
Your blog is blowing my mind. How did you come to know what you know? I have a similar blog up at sophiashem dot wordpress if you want to check it out