8vo (198 x 124 mm). Half-title; 3 engraved folding tables. (Minor fraying to outer margin of one table.) Contemporary French sheep, smooth spine gilt, red morocco lettering-piece gilt, edges stained yellow (some minor wear, upper joint starting). 

FIRST EDITION, SIGNED BY THE PRINTERS on the half-title.  Pinel's work, based on his experiences at the Hospice de la  Salpêtrière, where he was chief physician, was a major contribution to the classification of diseases.  He was instrumental in the development of a more humane approach to the care of psychiatric patience, and worked to humanise their treatment, for which he's described as the father of modern psychiatry.