hypoxic stress, and suggested that this could be 

 explained by lactate transfer out of the system. It 

 is very hard to believe that such a process could 

 account for the extremely interesting results of 

 Smit and his colleagues (Driedzic and Hochachka 

 entitled their paper "The unanswered question of 

 high anaerobic capabilities of carp white muscle"), 

 and we agree with Johnston et al. ( 1977) in their 

 conclusion that carp would appear to be an ideal 

 species for studying the relationship between 

 muscle design and locomotor function. 



Ackn<)\\ ledgements 



We are grateful to D. J. Randall (Department of 

 Zoology, University of British Columbia, Van- 

 couver) for procuring the Pacific herring for us and 

 for allowing us to use his respirometer. One of us 

 (Q. B.) did part of this work during the award of a 

 Nuffield-NRC visiting lectureship, which is grate- 

 fully acknowledged, as is support (to D. R. J.) by 

 research grants from the National Research 

 Council of Canada and Fisheries Research Board 

 of Canada. 



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Quentin Bone 



Plymouth Laboratory 



Marine Biological Association of the United Kingdorri 



Citadel Hill 



Plymouth PLl 2PB, England 



JOE KICENIUK 



David r. Jones 



Department of Zoology 

 University of British Columbia 

 Vancouver, B.C., Canada V6T 1W5 



699 



