2 Pages in Charles Darwin's Library associated with "mental states - energy"

  1. The anatomy and philosophy of expression.
    By: Bell, Charles.
    Publication info: London :John Murray,1844.
    Pages: Page 150  
  2. De la physionomie et de la parole.
    By: Lemoine, Albert.
    Publication info: Paris :Germer Baillière,1865.
    Pages: Page 94