1. Robinow, C. F., in Dubos, “The Bacterial Cell”, 353–57 (Harvard University Press, 1945). Bisset, K. A., “Cytology and Life-history of Bacteria” (Edinburgh, 1950). Knaysi, G., “Elements of Bacterial Cytology” (2nd edit. Ithaca, N.Y., 1951).
2. Tulasne, R., and Vendrely, R., Nature, 160, 255 (1947).
3. Palade, G. E., J. Exp. Med., 95, 285 (1951). Bradfield, J. R. G., Quart. J. Micr. Sci., 94, 351 (1953).
4. Bretschneider, L. H., Proc. Kon. Akad. v. Wetensch., 52, 301 (1949).
5. Danielli, J. F., “Cytochemistry” (London, 1953). Bradfield, J. R. G., Biol. Rev., 25, 113 (1950).