8vo. 520pp. p.395 misnumbered 39. With three terminal large folding plates of spherical and plane trigonometry. Nineteenth-century gilt-tooled half-calf, marbled boards. Lightly rubbed and marked, with surface wear to joints and edges, damp-staining to spine and boards. Loss to fore-edge of first blank fly-leaf and paper excision to margin of title at head. Numerous manuscript marks and inscriptions to first blank fly-leaf and title, including the inscription 'E. Libris Johannes Coleridge' and the date 'Wed. Jan 26th, 1803'. Some damp-staining to leaves, spotting throughout.

A Coleridge family copy - possibly used by John Taylor Coleridge (1790-1876) - of Scottish mathematician Robert Simson's (1687 – 1768) Elements of Euclid. First published in 1756, in both English and Latin, the original text contained only the first six books, with the eleventh and twelfth appended to the end. This edition includes, in addition, the book of Euclid's Data, first incorporated in 1762. Simson's critical edition served as the nation's standard text of Euclid for over a century; reaching over 70 editions, it continued to influence even Twentieth-Century compilations of the great mathematician's works.