

While Leeuwenhoek is most famous for his revelations concerning blood’s corpuscles, and his discovery of spermatazoa and protozoa, capillaries, etc., his work also had an important scientific aspect for Americanists. Letter 107, the final one in the Continuatio epistolarum, reveals the insect nature of cochineal. Others will find his work on cannabis worthwhile.
Provenance: 18th-century armorial bookplate of Thomas Arnold, M.D.; 20th-century signature of Kenneth Thimann, the noted botanist and winner of the Balzan Prize.
I: Dobell 25b; II: Dobell 24 (not calling for any plates and saying the pagination is “unnumbered”!). Contemporary quarter white sheep, apparently later stained red, the red stain having faded or been absorbed irregularly; spine yet later covered with brown paper, remnants of that adhering irregularly. Paste boards covered with strips of contemporary marbled paper.
Uncut copies of both works, some portions unopened. One plate loose but present. Another plate present in two copies. A good+ copy.