![Darwin, C. R. 1875. The variation of animals and plants under domestication. London: John Murray. 2d edition. Volume 1. Darwin, C. R. 1875. The variation of animals and plants under domestication. London: John Murray. 2d edition. Volume 1.](http://darwin-online.org.uk/converted/scans/1875_Variation_F880(online)/1875_Variation_F880.1_080.jpg)
Darwin, C. R. 1875. The variation of animals and plants under domestication. London: John Murray. 2d edition. Volume 1.
![Darwin, C. R. 1868. The variation of animals and plants under domestication. London: John Murray. First edition, first issue. Volume 1. Darwin, C. R. 1868. The variation of animals and plants under domestication. London: John Murray. First edition, first issue. Volume 1.](http://darwin-online.org.uk/converted/scans/1868_Variation_F877.1(online)/1868_Variation_F877.1_152.jpg)
Darwin, C. R. 1868. The variation of animals and plants under domestication. London: John Murray. First edition, first issue. Volume 1.
![Darwin, C. R. 1868. The variation of animals and plants under domestication. London: John Murray. 1st edition, second issue. Volume 1. Darwin, C. R. 1868. The variation of animals and plants under domestication. London: John Murray. 1st edition, second issue. Volume 1.](http://darwin-online.org.uk/converted/scans/1868_Variation_F878.1(online)/1868_Variation_F878.1_150.jpg)
Darwin, C. R. 1868. The variation of animals and plants under domestication. London: John Murray. 1st edition, second issue. Volume 1.
![The Project Gutenberg eBook of The Variation of Animals and Plants under Domestication, by Charles Darwin The Project Gutenberg eBook of The Variation of Animals and Plants under Domestication, by Charles Darwin](https://www.gutenberg.org/files/3332/3332-h/images/fig14.jpg)
The Project Gutenberg eBook of The Variation of Animals and Plants under Domestication, by Charles Darwin
![Darwin, C. R. 1868. The variation of animals and plants under domestication. London: John Murray. First edition, first issue. Volume 1. Darwin, C. R. 1868. The variation of animals and plants under domestication. London: John Murray. First edition, first issue. Volume 1.](http://darwin-online.org.uk/converted/scans/1868_Variation_F877.1(online)/1868_Variation_F877.1_087.jpg)
Darwin, C. R. 1868. The variation of animals and plants under domestication. London: John Murray. First edition, first issue. Volume 1.
![Darwin, C. R. 1875. The variation of animals and plants under domestication. London: John Murray. 2d edition. Volume 1. Darwin, C. R. 1875. The variation of animals and plants under domestication. London: John Murray. 2d edition. Volume 1.](http://darwin-online.org.uk/converted/scans/1875_Variation_F880(online)/1875_Variation_F880.1_178.jpg)
Darwin, C. R. 1875. The variation of animals and plants under domestication. London: John Murray. 2d edition. Volume 1.
![Darwin, C. R. 1868. The variation of animals and plants under domestication. London: John Murray. 1st edition, second issue. Volume 1. Darwin, C. R. 1868. The variation of animals and plants under domestication. London: John Murray. 1st edition, second issue. Volume 1.](http://darwin-online.org.uk/converted/scans/1868_Variation_F878.1(online)/1868_Variation_F878.1_352.jpg)
Darwin, C. R. 1868. The variation of animals and plants under domestication. London: John Murray. 1st edition, second issue. Volume 1.
![Darwin, C. R. 1868. The variation of animals and plants under domestication. London: John Murray. First edition, first issue. Volume 1. Darwin, C. R. 1868. The variation of animals and plants under domestication. London: John Murray. First edition, first issue. Volume 1.](http://darwin-online.org.uk/converted/published/1868_Variation_F877/1868_Variation_F877_fig027.jpg)
Darwin, C. R. 1868. The variation of animals and plants under domestication. London: John Murray. First edition, first issue. Volume 1.
![Darwin, C. R. 1868. The variation of animals and plants under domestication. London: John Murray. First edition, first issue. Volume 1. Darwin, C. R. 1868. The variation of animals and plants under domestication. London: John Murray. First edition, first issue. Volume 1.](http://darwin-online.org.uk/converted/scans/1868_Variation_F877.1(online)/1868_Variation_F877.1_155.jpg)
Darwin, C. R. 1868. The variation of animals and plants under domestication. London: John Murray. First edition, first issue. Volume 1.
![Darwin, C. R. 1868. The variation of animals and plants under domestication. London: John Murray. 1st edition, second issue. Volume 1. Darwin, C. R. 1868. The variation of animals and plants under domestication. London: John Murray. 1st edition, second issue. Volume 1.](http://darwin-online.org.uk/converted/scans/1868_Variation_F878.1(online)/1868_Variation_F878.1_071.jpg)
Darwin, C. R. 1868. The variation of animals and plants under domestication. London: John Murray. 1st edition, second issue. Volume 1.
![Darwin, C. R. 1875. The variation of animals and plants under domestication. London: John Murray. 2d edition. Volume 1. Darwin, C. R. 1875. The variation of animals and plants under domestication. London: John Murray. 2d edition. Volume 1.](http://darwin-online.org.uk/converted/scans/1875_Variation_F880(online)/1875_Variation_F880.1_193.jpg)
Darwin, C. R. 1875. The variation of animals and plants under domestication. London: John Murray. 2d edition. Volume 1.
![Darwin, C. R. 1868. The variation of animals and plants under domestication. London: John Murray. 1st edition, second issue. Volume 1. Darwin, C. R. 1868. The variation of animals and plants under domestication. London: John Murray. 1st edition, second issue. Volume 1.](http://darwin-online.org.uk/converted/scans/1868_Variation_F878.1(online)/1868_Variation_F878.1_005.jpg)
Darwin, C. R. 1868. The variation of animals and plants under domestication. London: John Murray. 1st edition, second issue. Volume 1.
![Darwin, C. R. 1875. The variation of animals and plants under domestication. London: John Murray. 2d edition. Volume 1. Darwin, C. R. 1875. The variation of animals and plants under domestication. London: John Murray. 2d edition. Volume 1.](http://darwin-online.org.uk/converted/scans/1875_Variation_F880(online)/1875_Variation_F880.1_298.jpg)
Darwin, C. R. 1875. The variation of animals and plants under domestication. London: John Murray. 2d edition. Volume 1.
![Darwin, C. R. 1868. The variation of animals and plants under domestication. London: John Murray. 1st edition, second issue. Volume 1. Darwin, C. R. 1868. The variation of animals and plants under domestication. London: John Murray. 1st edition, second issue. Volume 1.](http://darwin-online.org.uk/converted/scans/1868_Variation_F878.1(online)/1868_Variation_F878.1_151.jpg)
Darwin, C. R. 1868. The variation of animals and plants under domestication. London: John Murray. 1st edition, second issue. Volume 1.
![Darwin, C. R. 1875. The variation of animals and plants under domestication. London: John Murray. 2d edition. Volume 1. Darwin, C. R. 1875. The variation of animals and plants under domestication. London: John Murray. 2d edition. Volume 1.](http://darwin-online.org.uk/converted/scans/1875_Variation_F880(online)/1875_Variation_F880.1_100.jpg)
Darwin, C. R. 1875. The variation of animals and plants under domestication. London: John Murray. 2d edition. Volume 1.
![Darwin, C. R. 1868. The variation of animals and plants under domestication. London: John Murray. First edition, first issue. Volume 1. Darwin, C. R. 1868. The variation of animals and plants under domestication. London: John Murray. First edition, first issue. Volume 1.](http://darwin-online.org.uk/converted/scans/1868_Variation_F877.1(online)/1868_Variation_F877.1_243.jpg)