Optokinetic Drum
The optokinetic drum was used to see the reflex movements of the eyes and visual illusions. The man in the photo, Dr. G.H. Byford, is wearing contact lenses with a mini lamp cemented to them so they can accurately track the eye movements.
Parturition Chair
This chair was used by mothers in labor. In the early 18th century, a laboring mother would sit in this chair until it was time to push. Then, a midwife would reach up and help pull the baby out.
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