... For instance, the work of Hixon and Johns6 shows that this equation holds fairly well for the saturated fatty acids. ' Ostwald, 2. physik. Chew., 3,418 (1889). Behaghel, (3) Hammett' has shown that the equation A log Ko = UP (3') (6) Hixon and Johns, THIS JOURNAL, IS, 1786 (1927). (7) Hammett, ibid., 69, 9fi (1937). Page 4. 15qj8 NORMAN V. HAYES AND GERALD E. K. BRANCH Vol. 65 0.40 0.30 0.20 0.10 0 00 ...