24. This Doctor Took Haunting Pictures During Procedures
This picture looks like the poor soul is being tortured, and by modern standards, he might as well be. Duchenne de Boulogne was a French doctor who pioneered many new medical techniques, and he documented his work by taking pictures of his patients while undergoing procedures. He made many advancements, and modern medicine would not be the same today without his contributions. However, as you can tell from the picture, the procedures were not entirely pleasant, and the patients did not benefit from anesthesia the way we understand it today.
Read More: 16 Medical Procedures and Devices from the Early 1900s.