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^* RozsA, G. and Wyckoff, R. W. G., Biochim. Biophys. Acta., 6 (1950), 334 

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iposition of the Chromosomes 



*8 Schmidt, G., Hecht, L. and Thannhauser, S. J., J. gen. Physiol., 31 (1948), 203 

 " Leuchtenberger, C, Chromosoma, 3 (1950), 449 

 '" Caspersson, T., ibid., i (1939), 147 



