Table XLII. 

 Mean blood magnesium concentration + S. E. in P. aztecus 

 during the time course of salinity-temperature adaptation. 



Control Temperature 32°C Control Salinity 15°/oo 



Test Temperature 18°C 



Sampling Test Salinity - °/oo 



Interval 



(hour) 2 5 10 15 25 36 



B43 



