These facts seemed to me to throw some light on the origin of species -- that mystery of mysteries ... after a certain unknown number of generations, some bird had given birth to a woodpecker ...

This time, Wallace had sent along a 20-page manuscript ... thoroughly—principally with a view to the theory of the origin of species." In April 1848, having saved £100 from his wages as ...

Ironically, one great unsolved problem in Darwin's master work, On the Origin of Species, was just that ... Since then, he has published a number of books and chapters and received the prestigious ...

All viewers of this document can see this public note. This is the most explicit and concise description and definition of natural selection in On the Origin of Species. Darwin’s view here is ...