75/2355 [Newton, I.]. 's Gravesande, W.J. Mathematical Elements of Natural Philosophy, confirm'd by Experiments: or, an introduction to Sir Isaac Newton's Philosophy. London, W. Innys etc., 1747, 6th ed., 2 vols., (2),LXXV,(1),475,(1); (2),389,(33)p., 127 fold. engr. plates, contemp. unif. calf, spines richly gilt w. 2 contrasting mor. letterpieces, 4to.

- Vol. 2 w. heraldic bookplate on upper pastedown and sl. wormholed at the beginning. Joints and spine-ends rubbed (and splitting); corners showing.

= One of the most important Newtonian commentaries, which also helped establish Willem Jacob 's Gravesande's reputation as a scientist. Bierens de Haan 1809; DSB V, p.510. SEE ILLUSTRATION PLATE CI.