The Expression of the Emotions in Man and Animals "core" expressions: anger, fear, surprise, disgust, happiness and sadness. Darwin received dozens of photographs of psychiatric patients from James Crichton-Browne, but included in the book only one engraving (photoengraved by James Davis Cooper) based on these illustrations – sent on 6 June 1870 (along with Darwin's copy of Duchenne's "Mécanisme") ("Darwin Correspondence Project": Letter 7220). This was "Figure 19", page 296 – and showed a patient (Crichton-Browne reported) under the care of Dr James Gilchrist at the Southern Counties Asylum (of Scotland), the public wing of the Crichton Royal in Dumfries. The review in the January 1873 "Quarterly Journal of
The Descent of Man, and Selection in Relation to Sex to the forces of sexual selection. While debates on the subject continues, in January 1871 Darwin started on another book, using left over material on emotional expressions, which became "The Expression of the Emotions in Man and Animals". In recent years controversy also involved the peacock tail, the most famous symbol of the principle of sexual selection. A seven-year Japanese study of free-ranging peafowl came to the conclusion that female peafowl do not select mates merely on the basis of their trains. Mariko Takahashi found no evidence that peahens expressed any preference for peacocks with more elaborate trains, such as