Newton (Sir Isaac) The Mathematical Principles of Natural Philosophy, vol.2 only (of 2), first edition in English, lacking engraved frontispiece, with 22 folding engraved plates, 2 folding letterpress tables, 2 engraved head-pieces by A.Motte, with the 13pp. Index and 8pp. Appendix but without the 71pp. 'The laws of the moon's motion according to gravity' by John Machin usually bound at end, cropped shaving first engraved head-piece, very light damp-staining to title, last couple of leaves and 4 folding plates at end, small yellow stain to first leaf, contemporary ink manuscript notes to front free endpaper, engraved armorial bookplate (with name scored out), contemporary tree calf, spine gilt, lacking labels, rubbed, boards a little scuffed, spine ends worn, headband detached, split to upper joint, [PMM 161], 8vo, for Benjamin Motte, at the Middle-Temple-Gate, 1729.

⁂ First English edition of vol.2 of Newton's Principia, the most important work in the history of science, and including Newton's System of the World as Book 3. Machin's work is usually bound at the end of this volume but is occasionally found at the end of vol.1.