34 K. LINDERSTRÖM-LANG [2 



the D- and L-forms are randomly distributed, only 1/2 to 1 peptide bond 

 per mole will be opened. Preliminary experiments have given results which 

 are in favor of a random distribution. 



The author is indebted to J. Schellman, W. Kauzmann, and M. Ottesen for valuable 

 discussions. 



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