Fig. 2 .

The front cover ( left ) and part of page 8 ( right ) of “liquide céphalo-rachidien ou cérébro-spinal” described by François Jean Magendie owned by Kyoto University Library are shown. The foramen of Magendie that exists at the exit of the fourth ventricle is named after this scientist, who is well known for demonstrating the connection between the ventricular system and subarachnoid space. However, he is also famous for using the term “Le liquid cérébro-spinal” for the first time ( red underlined portion in right figure). Photos reprinted with the permission of Kyoto University Library.