- Browned; both vols. w. the same libr. stamp on prelim. lvs. incl. title and w. (partly crossed-out) annotations in pen and ink on first free endpaper; one large fold. plate partly torn on fold. Spine-ends dam.; both gilt spines for the larger part worn off; corners showing; worn along extremities.
= First vol. Opera contains letters 28-31, 34-36, 38 and 42-60. Second vol. Arcana contains letters 32, 33, 37, 39-41 and 61-92. Dobell 29 vol. 1 and 25c; Waller 10889 and 10879; Wellcome III, 477; cf. Nissen ZBI 2416 and cf. 2417; PMM 166; DSB VIII, p.126ff. "Leeuwenhoek was a brilliant example of the amateur scientist. (...) Leeuwenhoek made remarkable discoveries in the anatomy of man and the higher and lower forms of animal and plant life (...)." (PMM). SEE ILLUSTRATION PLATE XCVIII.