117 - Mathematics - Simson, Robert. *Opera quaedam reliqua* (Frontispiece: *Opera quaedam geometrica. Printed posthumously at the expense of Philip, Earl of Stanhope*). Namely: I. The two restored books of Apollonius of Perga on the Determinate Section, augmented by two additional books. II. A book of porismata ... III. A book on logarithms. IV. A fragment on the limits of quantities and ratios. V. An appendix containing a few problems intended primarily to illustrate the analysis of the ancient geometers. Published for the first time since the author’s death, edited by Jacob Clow. With an engraved portrait frontispiece and numerous illustrations in the text. Glasgow, Foulis, 1776. 2 leaves, X, 1 leaf, 594, 34, 1 leaf, 33, 1 blank leaf, 23 pp. 24 x 18 cm. Contemporary leather binding with spine label, rich gilt decoration on the spine, coat-of-arms supralibros on both covers (joints restored).

Mathematics - Simson, Robert. *Opera quaedam reliqua* (Frontispiece: *Opera quaedam geometrica. Printed posthumously at the expense of Philip, Earl of Stanhope*). Namely: I. The two restored books of Apollonius of Perga on the Determinate Section, augmented by two additional books. II. A book of porismata ... III. A book on logarithms. IV. A fragment on the limits of quantities and ratios. V. An appendix containing a few problems intended primarily to illustrate the analysis of the ancient geometers. Published for the first time since the author’s death, edited by Jacob Clow. With an engraved portrait frontispiece and numerous illustrations in the text. Glasgow, Foulis, 1776. 2 leaves, X, 1 leaf, 594, 34, 1 leaf, 33, 1 blank leaf, 23 pp. 24 x 18 cm. Contemporary leather binding with spine label, rich gilt decoration on the spine, coat-of-arms supralibros on both covers (joints restored). Cantor III, 509 – Lowndes IX, 2403 – First edition. - Published from the estate of the famous Scottish mathematician, at the publisher’s expense, not for commercial sale. - “Simson’s contributions to mathematical knowledge took the form of critical editions and commentaries on the works of the ancient geometers ... After his death, restored versions of Apollonius’s treatise *De sectione determinata* and of Euclid’s treatise *De porismatibus* were printed for private circulation in 1776 at the expense of Earl Stanhope ... The volume also contains dissertations on “Logarithms” and on the “Limit of Quantities and Ratios,” as well as a few problems illustrating ancient geometric analysis.” (Encycl. Brit.) - Engraved coat-of-arms bookplate on the inside cover. - Wide-margin copy, printed on sturdy paper. *