Wellcome Library in London last week, I came upon a mention of the wonderful and underknown painting shown above, "la leçon d'hygiène" by Belgian decadent artist Félicien Rops. The painting is a rare fine-art depiction of a visit to a 19th century popular anatomical museum. I could find out precious little about it, but Wikimedia claims it is in a private collection and was painted between 1878 and 1881.
If anyone knows anything more about it, please email me at morbidanatomy [at] gmail.com. I also highly recommend that you click on the image to see larger, finer version.