1. Lines, E. W., J. Coun. Sci. and Indust. Res. (Aust.), 8, 117 (1935).
2. Underwood, E. J., and Filmer, J. F., Austral. Vet. J., 11, 84 (1935).
3. Askew, H. O., and Dixon, J. K., N.Z. J. Sci. Tech., 18, 73 (1936).
4. Stewart, J., Mitchell, R. L., and Stewart, A. B., Empire J. Exp. Agric., 9, 145 (1941); 10, 57 (1942).
5. Stewart, J., Biochem. J., 41, Proc. xlii (1947).