"by collecting all facts which bore in any way on the variation of animals and plants under domestication and nature, some light might perhaps be thrown on the whole subject. My first note-book was opened in July 1837. I worked on true Baconian principles, and without any theory collected facts on a whole scale" Charles Darwin, Autobiography
Darwin is talking about the origin of species and is explicitly following a logical sequence.
I've been up since 3 and class 6-8 so I'm completely out of sort.
DONE with getting up at 3 but Field Zoology runs at 8 so I need to be up at 5.