476 Information Theory and Biology 



7. Pollack, Irwin, "The Information of Elementary Auditory Displays," 

 J. Acous. Soc. Am. 24: 745-749 (Nov. 1952). 



8. Halsey, R. M., and A. Chapanis, "On the Number of Absolutely Identifi- 

 able Spectral Hues" (Letter to the Editor) J. Opt. Soc. Am. 41: 1057-1058 

 (1951). 





