1. AYER, J. B., Arch. of Neurol. and Psychiat., 1919, ii, 158.
2. La circulation du liquide;BABINSKI, J.; Bull;et Mem. Soc. m4d. des IIoep
3. CLAUDE, H., Revue nieurol., 1909, 1420.
4. COOPER, C. Al., Joucr. Amer. Med. Assoc., 1910, IV, 2298.
5. DANDY, W. E., Ann. of Surg., 1919, lxx, 129.