1. Blount, W. P., Turkeys, 9, 52 (1961).
2. Asplin, F. D., and Carnaghan, R. B. A., Vet. Rec., 73, 1215 (1961).
3. Loosmore, R. M., and Markson, L. M., Vet. Rec., 73, 813 (1961).
4. Loosmore, R. M., and Harding, J. D. J., Vet. Rec. (in the press).
5. Carnaghan, R. B. A., and Sargeant, K., Vet. Rec., 73, 726 (1961). Sargeant, K., Allcroft, Ruth, and Carnaghan, R. B. A., ibid., 73, 865 (1961).