3 Pages in Charles Darwin's Library associated with "mental states - discontent"

  1. The anatomy and philosophy of expression.
    By: Bell, Charles.
    Publication info: London :John Murray,1844.
    Pages: Page 140  Page 150  
  2. Mécanisme de la physionomie humaine, ou analyse électro-physiologique de l'expression des passions.
    By: Duchenne, Guillaume Benjamin.
    Publication info: Paris :Jules Renouard,1862.
    Pages: Page 91