6 Pages in Charles Darwin's Library associated with "mental states - passion"

The anatomy and philosophy of expression
By: Bell, Charles, Sir,
Publication info: London, John Murray, 1844
Pages: Page 219
Elements of physiology
By: Müller, Johannes, - Baly, William,
Publication info: London, Taylor & Walton, 1838-1842
Volume: v.2
Pages: Page 933
Naturgeschichte der Saeugethiere von Paraguay
By: Rengger, Johann Rudolph.
Publication info: Basel, Schweighauser, 1830
Pages: Page 46
Wissenschaftliches System der Mimik und Physiognomik
By: Piderit, T.
Publication info: Detmold, Klingenberg, 1867
Pages: Page 64 Page 65 Page 82