ABSTEACT 



The -uniformities and the contrasts among them are pointed out. 

 The general forms of variation in content, of time relations in 

 recovery, and of rates of exchange in relation to excesses and 

 deficits (equilibration) are induced. 



Simultaneous equilibrations of two or more such quantities are 

 studied. The interplay of quantities indicates the organism's 

 choices in handling at one time the various items that call for 

 recovery. It is inferred that the organism is a compound of rela- 

 tions among components in mutual adjustment. Descriptive pro- 

 cedures are illustrated that exhibit the multiple relations in com- 

 prehensible manners. 



These selected relations among data are manifestations of the 

 processes commonly meant by the term physiological regulations. 

 They provide a quantitative means of visualizing what organisms 

 do to maintain constancy not only of composition, but of energies, 

 forces, structures, and functioning. 



