4 Pages in Charles Darwin's Library associated with "physical conditions - supernumerary digitism"

Intermarriage.
By: Walker, Alexander,
Publication info: London :Churchill,1838.
Pages: Page 139 Page 140
Introduction á la zoologie générale.
By: Milne-Edwards, H. (Henri),
Publication info: Paris :Victor Masson,1851.
Pages: Page 140
Researches into the physical history of mankind.
By: Prichard, James Cowles.
Publication info: London :Sherwood, Gilbert & Piper,1836.
Volume: v.1
Pages: Page 244