1. Proc. Roy. Soc., A, 137, 62 (1932).
2. Trans. Farad. Soc., 22, 477 (1926).
3. See Mitchell, Trans. Farad. Soc., 33, 1130 (1937).
4. There is in fact a âre-extensionâ surface phenomenon which occurs in certain circumstances: see, Dervichian, D., C.R., 209, 16 (1939).
5. Philippi, “On the Nature of Proteinsâ. Thesis, p. 71 (Amsterdam. 1936).