The Expression of the Emotions in Man and Animals major revision which made Darwin "sick of the subject and myself, and the world". It quickly sold around 7,000 copies and was widely praised as a charming and accessible introduction to Darwin's evolutionary theories. A second edition was published by Darwin's son in 1890, without several revisions suggested by Darwin; these were not published until the third edition of 1999 (edited by Paul Ekman). Published as a sequel to "The Descent of Man", "The Expression" was assured of a wide readership in mid-Victorian England. However, the early death of George Romanes (1848 - 1894) robbed Darwin of a powerful advocate
Darwin from Descent of Man to Emotions our work; and of these you rank as the first." With "the little strength left in me" he reopened his enquiries into earthworms, requesting information from correspondents. The 6th edition of "Origin of Species" was published by Murray on 19 February 1872 at a price kept down to 7s. 6d. by using minute print, and sales increased from 60 to 250 a month. Through the spring Darwin pressed on with "The Expression of the Emotions in Man and Animals", pointing to shared evolution in contrast to Charles Bell's "Anatomy and Physiology of Expression" which claimed divinely created muscles to express