I agree, this document is really only useful for historical development. However, it is useful for tracking down some history. I've been trying to track down

I agree, this document is really only useful for historical development. However, it is useful for tracking down some history. I've been trying to track down this expression: "All men are mortal; Socrates is a man; therefore Socrates is mortal". It's often quoted, but no one gave me a source. Using this old book I managed to track it back to at least A System of logic... by John Stuart Mill, 1843, Book II Chapter 3 page 245. https://archive.org/details/systemoflogicrat01millrich/page/244 https://archive.org/details/systemoflogicrat01millrich/page/... The quote may be even older, but that was still a help. If anyone knows an older source, I'd love to know. But that at least helped. Anyway: while this document is only useful for its historical connection, as a way to investigate the history of logic it's interesting.