1. Morton, R. K., and Vincent, J. M., J. Aust. Inst. Agric. Sci., 13, 125 (1947).
2. Smythe, V. R., Queensland J. Agric. Sci., 2, 128 (1945).
3. Great Britain, Min. Agric. and Fish.: Form C.158/TPY, 1943.
4. Great Britain, Ministry of Health, Memo. 139/Foods, 1937.
5. Mitchell, H. H., Dairy Indust., 12, 351 (1947).