Click image to zoom
Royal Collection © Her Majesty Queen Elizabeth II
Recto: Notes on the respiratory system, with a marginal sketch. Verso: The nervous system
Recto: a drawing of the lungs in the thorax, with notes on respiration. Verso: two drawings showing the brain, spinal cord and spinal nerves. Between them is a human skeletal figure, which illustrates the precept that the nervous system should be represented within the outline of the body.