ISOLATION AND PROPERTIES OF WALLS 23 



16. Ribi, E., T. Peirine, R. List, W. Brown, and G. Goode, Proc. Soc. 



Exptl. Biol. Med., 100, 647 (1959). 



17. Weidel, W., Z. Nalurforsch., 6b, 251 (1951). 



18. Slade, H. D., and J. K. Vatter, /. Bacteriol., 71, 236 (1956). 



19. Salton, M. R. J., unpublished results. 



20. Marr, A. G., and E. H. Cota-Robles, /. Bacteriol., 74, 79 (1957). 



21. Shockman, G. D., J. J. Kolb, and G. Toennies, Biochim. et Biophys. 



Acta, 24, 203 (1957). 



22. Strange, R. E., and F. A. Dark, /. Geyi. Microbiol., 16, 236 (1957). 



23. Weibull, C, /. Bacteriol., 66, 696 (1953). 



24. Northcote, D. H., and R. W. Home, Biochem. ]., 51, 232 (1952). 



25. Houwink, A. L., and D. R. Kreger, Antonie van Leeuwenhoek, 19, 



1 (1953). 



26. Nickerson, W. J., 4th Intern. Congr. Biochem., Vol. XIV, 1959, p. 



191. 



27. Nickerson, W. J., and G. Falcone in Sulfur in Proteins, Academic 



Press, New York, 1959, p. 409. 



28. Falcone, G., and W. J. Nickerson, 4th Intern. Congr. Biochem., Vol. 



VI, 1959, p. 65. 



29. Northcote, D. H., K. J. Goulding, and R. W. Home, Biochem. J., 



70, 391 (1958). 



30. Frey-Wyssling, A., and K. Miihlethaler, Vierteljahresschr. Nalur- 



forsch. Ges. Ziirich, 95, 45 (1950). 



31. Roelofsen, P. A., Biochim. et Biophys. Acta, 6, 357 (1951). 



32. Shatkin, A. J., and E. L. Tatum, /. Biophys. Biochem. Cytol., 6, 423 



(1959). 



33. Chapman, J. A., and M. R. J. Salton, in preparation. 



34. Preston, R. D., Science Progress, 46, 593 (1958). 



35. Houwink, A. L., Biochim. et Biophys. Acta, 10, 360 (1953). 



36. Salton, M. R. J., and R. C. Williams, Biochim. et Biophys. Acta, 



14, 455 (1954). 



37. Houwink, A. L., /. Gen. Microbiol., 15, 146 (1956). 



38. Labaw, W., and V. M. Mosley, Biochijn. et Biophys. Acta, 15, 325 



(1954). 



39. Kellenberger, E., and A. Ryter, /. Biophys. Biochem. Cytol., 4, 323 



(1958). 



40. Bartholomew, J. W., and R. Levin, /. Gen. Microbiol, 12, 473 (1955). 



41. Mitchell, P., and J. Moyle, /. Gen. Microbiol, 15, 512 (1956). 



42. Christian, J. H. B., and M. Ingram, /. Gen. Microbiol, 20, 32 (1959). 



