1. AHLQUIST, R. P., HUGGINS, R. A., and WOODBURY, R. A. (1947). J. Pharmacol., 89, 271.
2. ASHTON. N., and CooK, C. (1954). British Journal of Ophthalmology, 38, 433.
3. WARD, B., and SERPELL, G. (1953). Ibid., 37, 513.
4. WARD, B., and SERPELL, G. (1954). Ibid., 38, 397.
5. GYLLENSTEN, L. J., and HELLSTR6M, B. E. (1954). Acta paediat. (Uppsala), 43, Suppl. 100, p. 131.