200 



JOSEPH L. McCarthy 



which occur to you. 



Thank you. 



Before I cease, may I just make one correc- 

 tion? In the text on Page 3 there was clearly an error, 

 as you heard roe pause, and it has got to do with the title 

 of that paper. It is on the bottom of Page 3, the next 

 line to the bottom, in place of the word "state", s-t-a-t-e, 

 the word should be "study", s-t-u-d-y. I am sorry. 



CHAIRMAN STEIN: "Preliminary study"? 



PROFESSOR MCCARTHY: Yes. 



CHAIRMAN STEIN: Thank you. 



Thank you very much, Mr. McCarthy. Are 

 there any comments or questions? 



MR. POSTON: I have a question. 



CHAIRMAN STEIN: Yes. 



MR. POSTON: You stated that the PBI measures 

 spent sulfite liquor. Are there times when it doesn't 

 measure? 



PROFESSOR MCCARTHY: I think so. When some 

 of the substances which interfere are present. 



MR. POSTON: Then you would get a negative 

 result? 



PROFESSOR MCCARTHY: Oh, I think not. When 

 we get an erroneously high result. 



