1. R. D. Archer-Hind, “The Timaeus of Plato,” p. 273, Macmillan Co., London, 1888.
2. E. Clarke, The early history of the cerebral ventricles, Trans. Stud. Coll. Phys. Phila.
30:85–89, 1963.
3. C. Singer, “Vesalius on the Human Brain” (C. Singer, ed.), p. 18, Oxford University Press, London, 1952.
4. L. C. McHenry, Jr., “Garrison’s History of Neurology,” p. 71, C. C. Thomas, Springfield, Ill., 1969.
5. H. Davson, “Physiology of the Cerebrospinal Fluid,” Williams & Wilkins Co., Baltimore, 1967.