GALLERY

Title page from Darwin’s The descent of man.

Page with image comparing embryos of a human and a dog, from Darwin’s  The descent of man.

Text and images illustrating the physical differences, such as elaborate head feathers or long tail feathers, between male and female birds, from Darwin’s The descent of man.

Page of text and image of locust with wings spread, in order to illustrate the body parts that create musical vibrations, from Darwin’s The descent of man.

Image of the greater scaly appendages on the head of a male Plecostomus, or sucker fish, that do not appear on the female, from Darwin’s The descent of man.

Title page of Darwin’s The expression of the emotions in man and animals, 1872.

List of illustrations and first page of the introduction to Darwin’s The expression of the emotions.

Title page from  Darwin’s Insectivorous plants, 1875.