Taken from: Hermann Lebert. Traité d'anatomie pathologie générale et spéciale. Paris 1857
In the 19th century medical interest shifted more and more to pathology. This resulted in a number of beautiful anatomical atlases with state of the art illustrations. These are partly lithography, partly colored by hand.
Given the scarcity of doctors and the lack of medical knowledge in general in the 19th century, diseases could develop symptoms that are unknown today - even in under developed states.