i3i 



JOSEPH L. McCarthy 



Benson and Dr. Pearl at the University of Washington in 1940. 

 The results of our investigations in this field have been pub- 

 lished in the TAPPI magazine in 1963 as three papers, and copies 

 of these are attached to this statement. I hope they may be 

 made part of the record. 



CHAIRMAN STEIN: These will be, with your ap- 

 proval, included as exhibits in the record. They will be avail- 

 able in the offices of the Federal Water Pollution Control Ad- 

 ministration in Washington, D.C., and Portland, and in the State 

 This is one of the documents which is published in a publication 

 found in most scientific libraries and is readily available, 



so I think we can handle it as an exhibit. 



(The papers referred to are marked Exhibit 4 and 

 are on file at the FWPCA Headquarters in Washington,D.C . , with 

 copies on file at the FWPCA Regional Office in Portland, Oregon, 

 and the State of Washington WPCC office in Olympia,. Washington^ ) 



PROFESSOR MCCARTHY: Very good. Thank you. 



A further related investigation is still in 

 progress and this will also be described a little later. 



M^^re specifically, the initial investigations, 

 conducted by Mr. V. F. Felicetta and me, were published under 

 the title "Spent Sulfite Liquor, Paper X, the Pearl -Benson, or 

 Nitroso, Method for the Estimation of Spent Sulfite Liquor 

 Concentration in Water", (TAPPI 46, 337-34? (1963). The 

 first two conclusions presented from this work were the 

 following, and I quote from the published paper: 



