![](http://www.alamy.com/thumbs/6/CB34839C-37E2-43B0-B8CC-681835D7B030/M4B6RJ.jpg)
Anatomical study of a skull from the left, drawn by Leonardo Da Vinci, circa 1489
From The Drawings of Leonardo Da Vinci by A E Popham 2nd edition published 1947. Note the image is the correct way round. Da Vinci wrote in his own shorthand and also practised mirror writing. There are numerous speculations as to why he did this, but probably he was just doing it because he could, and it defied convention.
Size: 2901px × 4089px
Photo credit: © Historical Images Archive / Alamy / Afripics
License: Licensed
Model Released: No
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