STRUCTURAL l-ACTORS IN POLVM l.Rl/.Al ION 6l 



activity may be exhibited by surfaces very difEerent in composition, suggesting 

 that such activity may eventually be expressable solely as a t unction ol the elec- 

 trical properties of such surfaces and their geometry. 



The autlior wishes to acknnwlcd.i^c witli .uiMlitudc the siippdrt wlueh iiuule i)iissil)le tlie work 

 upon which this paper has been based: Crant G-j2g, National Science Foundation; The 

 Dr. Wallace C. and Clara A. Abbott Memorial Fund of the University of Chicago: Research 

 Grant C-2730, National Cancer Institute: and a Fellowship from the John Simon Guggenheim 

 Memorial Foundation. 



REFERENCES 



1. Allen, C. R. Bot. Guz. 32: 1, 1901. 



2. Bonner, \V. Pluiit Biochemistry. New York: Acad. Press, 1950. 



T,. Bragg, \V. L. Atomic Structure 0/ Mincriils. Ithaca, N. Y.: Cornell Univ. Press, 1937. 



4. Brauns, F. E. Chemistry of Lignins. New York: Acad. Press, 1952. 



5. Brown, S. A. and A. C. Neish. Can. J. Biochem. Physiol. 34: 769, 1956. 



6. Erdtman, H. and C. Wachtmeister. In: Festschrift, Arthur Stall. Basel: Sandoz A. G., 



1957- 



7. FiGGE, F. H. J. In: Biology of Mehuiomns, eilited by R. W. Miner. New York: New York 



.Acad. Sci., 1948. 



8. Freudenberg, K. and W. Heel. Chem. Ber. 86: 190, 1953. 



9. Freudenberg, K., H. Reznu:k, H. Boesenberg and D. Rosenach. Chem. Ber. 85: 641, 

 1952. 



10. Galston, a. W. In: ,W hiterinit. PLiiit Growth Substance Symp., Wye College, England, 



1955- 



11. Galston, A. W. and L. Y. Dalberg. Am. f. Bot. 41: 373, 1954. 



12. Gelssman, T. and E. Hinreiner. Bot. Rer. 18: 77, 1952. 



13. Ginsburg, B. Genetics 2: 176, 1944. 



14. GoLDACRE, P. L. and .\. W. Galston. Arch. Biochem. Biophys. 43: 169, 1953. 



15. Goodman, N. S. and S. M. Siegel. Nciture. In press. 

 if). Jacobs, W. Am. J. Bot. 39: 301, I95^- 



17. Jensen, W. A. Plant Physiol. 30: 426, 1955. 



18. Kent, P. W. and M. W. Whitehouse. Biochemistry of the .Imino Sugars. New York: 

 Acad. Press, 1955. 



19. Kerr, T. and J. W. Bailey. /. Arnold Arbor. 15: 327, 1934. 



20. Klein, R. M. and G. K. K. Link. Proc. Nat. Acad. Sci. 38: 1066, 1952. 



21. Kopac, M. J. In: Biology of Melanomas, editeil by R. W. Miner. New York: New York 

 Acad. Sci., 1948. 



22. Maehly, a. C. In: Methods of Biochemical Analysis, Vol. I, edited by D. Click. New York: 

 Interscience, 1955. 



23. Mason, H. S. In: Biology of Melanomas, eilited by R. W. Miner. New York: New York 

 Acad. Sci., 1948. 



24. Norman, A. G. Biochemistry of Cellulose, Polymonides, Lignin, etc. Oxford: Clarendon, 



1937- 



25. Pauling, L. The Nature of the Chemical Bond. Ithaca, N. Y.: Cornell Univ. Press, 1948. 



26. Ridgewav, D. Doctoral dissertation (Part B), Univ. of Rochester, Rochester, N. Y., 1957. 



27. Rudall, K. M. In: Fibrous Proteins and Their Biological Significance (Symp. Soc. Exper. 

 Biol. IX), edited by R. Brown and J. D.-vnielli. New York: Acad. Press, 1955. 



