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XIX-XXVII. Mean blood potassium 



concentration +_S.E B20 



XXVIII-XXXVI. Mean blood calcium 



concentration ji^S.E B29 



XXXVII-XLV. Mean blood magnesium 



concentration jt^S.E B38 



XLVI-LIV. Mean oxygen consumption 



^ S. E B47 



LV-LVII. Mean oxygen consumption +_ S. E. 



in media having variation in 

 cation concentration B56 



