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Notebook M2 p.99L ‘This point of contact is not more than a ¼ of an inch. literally a point to the eye. and underneath it the leaves are cut clear, but for the most part they are worked solid [?] {out from} the bell: [diagram] as thick as this - say and inch and ½ and ½ an inch where they lie over each other’
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[Version 0.05: May 2008]