Index for Mr Darwin’s work on the Variation of animals & Plants under Domestication.²

The names of all animals & plants to be given in Index. The names of all the authors, with very brief statement of subject– There need not be very copious references to the subjects discussed, as the Heading of Chapters show this. But when the same subject is alluded to in several places; it is highly advisable that it shd be given in Index. Thus I remember that [Peloric] flowers or [Pelorism] is referred to in 3 or 4 places. My Book certainly requires a good index in an eminent degree.

Ch. Darwin