1. Bailey, P., and Cushing, H. (1925). Arch. Neurol.
2. Tumours of the Glioma Group;Philadelphia
3. Beck, D. J. K., and Russell, D. S. (1942). Brain, 65, 352.
4. Cairns, H., and Russell, D. S. (1931). Ibid., 54, 377.
5. Eden, K. C. (1938). Ibid., 61, 298.