Beschreibung:

HEWSON, William (1739-1774). Experimental enquiries: Part the first. Being a second edition of an inquiry into the properties of the blood ... and an appendix relating to the discovery of the lymphatic system in birds, fish, and the animals called amphibious - Part the second: Containing a description of the lymphatic system in the human subject and in other animals [Vol. II]. London: T. Cadell, 1772 [Vol. I]; J. Johnson 1774 [Vol. II]. 2 volumes. 8 o (201 x 122 mm [Vol. I]; 208 x 125 mm [Vol. II]). 6 engraved plates, (5 folding [Vol. I]). (Light browning in first volume and minor foxing to text in second volume). Contemporary sheep [Vol. I]; contemporary cafl [Vol. II] (both uniformly rebacked). Provenance : W. Moorhouse (early signature on title-page [Vol. I]); John Sheldon (1752-1808), anatomist (presentation inscription from the author on half-title, his bookplate [Vol. II]); inscription on pastedown ("Joanni Jones dono dedit Rebecca Sheldon 1809" [Vol. II]). FIRST EDITION in book form of Vol. II; second edition of Vol. I. Hewson advanced knowledge of blood during the 1770s, when the microscope was little used because of distortions caused by compound lenses. Hewson used a single lens, and discovered a satisfactory way to mount "wet" specimens on slides, and so was able to ascertain the role of fibrogen, and give the first valid account of coagulation; to give the first account of the anatomy and production of lymphatics, and to describe clearly the three parts of the blood. Garrison-Morton 1102; Wellcome III, p.259; Norman 1069. (2)