The book was published late in White's life, compiled from a mixture of his letters to other naturalists — Thomas Pennant and Daines Barrington; a 'Naturalist's Calendar' (in the second edition) comparing phenology observations made by White and William Markwick of the first appearances in the year of different animals and plants; and observations of natural history organized more or less systematically by species and group. A second volume, less often reprinted, covered the antiquities of Selborne. Some of the letters were never posted, and were written for the book.