1. Stacey, M., and Barker, S. A., Polysaccharides of Micro-organisms, 125 (Oxford: Clarendon Press, 1960).
2. Barker, S. A., Pardoe, G. I., Stacey, M., and Hopton, J. W., Nature, 197, 231 (1963).
3. Barker, S. A., Pardoe, G. I., Stacey, M., and Hopton, J. W., Protides of the Biological Fluids, Eleventh Coll. Bruges, 1963, 287 (Elsevier, 1964).
4. Torriani, A., and Pappenheimer, jun. A. M., J. Biol. Chem., 237, 3 (1962).
5. Svennerholm, L., J. Neurochem., 1, 42 (1956).