The Origin of Species第六版與第一版的不同

On the Origin of Species 第六版比第一版在緒論前多了Historical Sketch，且多了一個章節Ch7 Miscellaneous Objections to the Theory of Natural Selection

A Census of Darwin’s On the Origin of Species

Darwin, C. R. 1859. On the origin of species by means of natural selection, or the preservation of favoured races in the struggle for life. London: John Murray. 1st edition, 1st issue.
Darwin, C. R. 1860. On the origin of species by means of natural selection, or the preservation of favoured races in the struggle for life. London: John Murray. 2nd edition, second issue.
Darwin, C. R. 1861. On the origin of species by means of natural selection, or the preservation of favoured races in the struggle for life. London: John Murray. 3d edition. Seventh thousand.
Darwin, C. R. 1866. On the origin of species by means of natural selection, or the preservation of favoured races in the struggle for life. London: John Murray. 4th edition. Eighth thousand.
Darwin, C. R. 1869. On the origin of species by means of natural selection, or the preservation of favoured races in the struggle for life. London: John Murray. 5th edition. Tenth thousand.
Darwin, C. R. 1872. The origin of species by means of natural selection, or the preservation of favoured races in the struggle for life. London: John Murray. 6th edition; with additions and corrections. Eleventh thousand.

(http://darwin-online.org.uk/contents.html#books)