is present are those taken under conditions of 

 steady-state where the readings stabilize and are 

 reproducible. For purposes of natural water manage- 

 ment it appears most desirable to more continuously 

 monitor dissolved gas tension at different locations 

 to accurately quantify and delimit the problem. 



original interest in this problem was sparked by a 

 meeting in January 1971 between Dr. Robert Rucker 

 (1972) of the Western Fish Disease Lab and Dr. Mer- 

 rill Spencer, then director of Virginia Mason 

 Research Center. 



ACKNOWLEDGMENTS 



This research was supported by USPHS grants 

 #HL 12015, #HL 14801, to the Virginia Mason 

 Research Center, Seattle, Washington, and Career 

 Award K04 HL 70543 to B. G. D'Aoust. 



We thank Bruce Monk of the National Marine 

 Fisheries Service, Montlake Laboratory, for the use 

 of the supersaturation test tower. The author's 



REFERENCES 



Enns, T., P. F. Scholander and E. D. Bradstreet. 1965. Effect 



of the hydrostatic pressure on gases dissolved in water. /. Phys. 



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 Rucker, R. 1972. Gas Bubble Disease: A Crititcal Review. 



Bur. Sport Fish, and Wildl. Tech. Paper No. 58. U.S. Dept. of 



the Interior. 

 Weiss, R. F. 1970. The solubility of nitrogen, oxygen and argon 



in water and sea water. Deep Sea Res. 77:721. 



770 D'Aoust, White, Seibold 



