The Hunting of the Snark based on a draft by Lewis Carroll, the Snark was allowed to show up in an illustration by Henry Holiday, where it appeared in a dream of the Barrister. The illustration to the chapter "The Banker's Fate" might contain pictorial references to the etching "The Image Breakers" by Marcus Gheeraerts the Elder, to William Sidney Mount's painting "The Bone Player" and to a photograph by Benjamin Duchenne used for a drawing in Charles Darwin's "The Expression of Emotions in Man and Animals". Upon the printing of the book on 29 March 1876, Carroll gave away eighty signed copies to his
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