1. RP 10675 Reference (shelfmark): RP 10675 Title: Scope & Content: FRANCIS WILLUGHBY. Autograph note and diagram on the fact that fishes always swim fat end first, as demonstrated by Sir William Petty with a triangular piece of wood. Creation date: [c. 1660]. Collection Area: Western Manuscripts Languages: English Date Range: 14 Jun 2016 Extent: 2 photocopy sheets