‘Tractatus de Haemorrhoidibus’ (Treatise on Haemorrhoids) Rare Book. First edition. Michael Alberti (1682–1757) was an influential professor of medicine and philosophy at the University of Halle. 2 parts in 1 volume. Halle, Druckerei des Waisenhauses, 1722 Contemporary half-leather. With engraved title vignette. 10 leaves, 418, 210 pp., 25 leaves. This work examines the causes, symptoms and treatments of haemorrhoids. It is based on humoral pathology (the theory of the four humours), but is already supplemented by clinical observations. Reference: Blake 9; Puschmann II, 700; Hirsch, Geschichte, 257 Size 22 x 17.5 cm Condition Binding rubbed, edges and corners bumped, upper capital with a small loss, some pages browned or with brown spots , the last 35 leaves with water stain; overall a good copy.