VIARDEL, Cosme. OBSERVATIONS SUR LA PRATIQUE DES ACCOUCHEMENTS, Naturels, contre nature, & Monstrueux. Paris, d'Houry Pere, 1748. Octavo. [iv]344[12]pp. + [17]ff. Contains 17 etched plates. Three, a folding portrait frontispiece and two folding obstetrical illustrations, were in the original edition of 1671. Viardel, Royal Surgeon to Queen Marie-Therese, was unusual in presenting methods which, he says, eliminate the need for instruments in childbirth, and adds a chapter on female ailments. This edition is updated with notes. Extremely rare. Folding plates have inconspicuous archival repairs; one later plate shows light stains; faint foxing to a few pages, but on the whole internally fine. Bound in an attractive contemporary mottled calf with spine label. Light wear to extremities and small nicks to spine ends. (Walleriana 9946, 1st edition.)