London, John Murray, 1860. . Second edition, tenth thousand; 8vo (20.5 x 13.5 cm); in-text illustrations, 32pp. of publisher's ads. to rear; publisher's blindstamped green cloth, gilt spine, extremities rubbed, occasional spotting, internal front hinge split but holding; xv, 519, [1], 32[ads.]pp. The definitive edition of Darwin's first published book, The Journal of Researches, containing the naturalist's last alterations to the text, including a new postscript dated 1st February 1860 bringing the work up to date. Better known today as The Voyage of the Beagle, it is 'undoubtedly the most often read and stands second only to On the origin of species as the most often printed' of Darwin's works, and is an 'important travel book in its own right and its relation to the background of his evolutionary ideas has often been stressed' (Freeman). Freeman 20.