Just putting this link here until I have more time to check into the subject. An Introduction to Kuzushiji.
Kuzushiji 崩し字 is that sosho-looking print script that was very popular in Edo-period texts. Very similar to sosho in several aspects, but lacks sosho’s elegance. Somewhere around here I have a book about the history of Japanese printing, and will look in that to see more.
I can make out some characters, due to my shodo studies, but can’t really say that I can “read” it.