1. See also Astbury, W. T., Jubilee Memorial Lecture of the Society of Chemical Industry, Chem. and Ind. (in press), and 60, 41 (1941).
2. Astbury, W. T., and Dickinson S., Proc Roy. Soc, B, 129, 307 (1940).
3. Pauling, L., and Niemann, C., J. Ameu Chem. Soc, 61, 1860 (1939).
4. Astbury, W. T., Trans. Faraday Soc., 36, 871 (1940).
5. Neurath, H., J. Phys. Chem., 44, 296 (1940).