![Darwin, C. R. 1868. The variation of animals and plants under domestication. London: John Murray. First edition, first issue. Volume 2. Darwin, C. R. 1868. The variation of animals and plants under domestication. London: John Murray. First edition, first issue. Volume 2.](http://darwin-online.org.uk/converted/scans/1868_Variation_F877.2(online)/1868_Variation_F877.2_337.jpg)
Darwin, C. R. 1868. The variation of animals and plants under domestication. London: John Murray. First edition, first issue. Volume 2.
![Darwin, C. R. 1868. The variation of animals and plants under domestication. London: John Murray. 1st edition, second issue. Volume 2. Darwin, C. R. 1868. The variation of animals and plants under domestication. London: John Murray. 1st edition, second issue. Volume 2.](http://darwin-online.org.uk/converted/scans/1868_Variation_F878.2(online)/1868_Variation_F878.2_073.jpg)
Darwin, C. R. 1868. The variation of animals and plants under domestication. London: John Murray. 1st edition, second issue. Volume 2.
![Darwin, C. R. 1868. The variation of animals and plants under domestication. London: John Murray. First edition, first issue. Volume 2. Darwin, C. R. 1868. The variation of animals and plants under domestication. London: John Murray. First edition, first issue. Volume 2.](http://darwin-online.org.uk/converted/scans/1868_Variation_F877.2(online)/1868_Variation_F877.2_361.jpg)