GENERAL. FEATURES OF WATER EXCHANGES 



173 



listed; for each proceeds almost unclianged at diverse loads. In 

 urinary losses (table 11) the several mammalian species have 

 higher modification ratios and more extreme augmentation ratios 

 than the frog and others. In rates of gain, mammals are outstand- 

 ing in fitting intake to the state of the body. Those are two of 

 many comparisons among the quantitative compensations in water 

 loads. It will be recalled that total rates and turnovers are un- 

 known for any parts (organs or cells) of organisms. 



(3) Variabilities of rates of water exchange in turnover (table 

 12) may be compared by coefficients either of difference or of 



TABLE 10 



varies, in several species. Total and partitioned gains and losses are listed at no load (T.O.) 

 extreme loads 



TABLE 11 

 water exchanges, in several species, computed from table W 



