1. Claes, H., Z. Naturforsch., 9 b, 461 (1954).
2. Schenck, G. O., et al., Ann., 584, No. 2/3, 125 (1953). Schenck, G. O., Die Naturwiss., 19, 452 (1954).
3. (a) Barltrop, J. A., Hayes, P. M., and Calvin, M., J. Amer. Chem. Soc., 76, 4348 (1954). (b) Seely, G. R., and Calvin, M., J. Chem. Phys. (in the press).
4. Lewis, G. N., and Calvin, M., J. Amer. Chem. Soc., 67, 1232 (1945). Dorough, G. D., and Calvin, M., Science, 105, 433 (1947); J. Amer. Chem. Soc., 70, 699 (1948). Huennekens, F. M., and Calvin, M., J. Amer. Chem. Soc., 71, 4024, 4031 (1949).
5. (a) Bradley, D. F., and Calvin, M., Proc. U.S. Nat. Acad. Sci. (submitted). (b) Bassham, J. A., and Calvin, M., University of California Radiation Laboratory Report, UCRL-2853. Paper on “Photosynthesis” for “Currents in Biochemical Research”, Vol. 2, Interscience Publishers (in the press). (c) Witt, H. T., Z. phys. Chem., 4, 120 (1955).