He knew that his readers were already familiar with the concept of transmutation of species from Vestiges, and his introduction ridicules that work as failing to provide a viable mechanism.
Vedel, že jeho čitatelia už boli oboznámení s konceptom transmutácie druhov z knihy Vestiges a jeho úvod vysmial túto prácu pre zlyhanie v poskytnutí životaschopného mechanizmu.