Wow Micca, thanks for the link! I read Stopes book when I was in my teens in the 60's, but didn't realize then, her trailblazing contribution. However, on visiting the material again, I believe I may have confused it with another I read at the time.

The book with the photo I first mentioned had a section about discovering your intended wife's personal habits, by surreptitiously inspecting her bedchamber and quarters, to see if they were tidy and clean. Also checking the cleanliness of her fingernails was a priority. If she didn't pass inspection, the gentleman was advised to seek another prospect.