188 



PHYSIOLOGICAL EEGULATIONS 



§ 72. Equilibeation diagrams 



What modifications of water exchanges occur as responses to 

 water increments everywhere, and what ones are limited to some 

 kinds of organisms only? Data may be brought together upon a 

 common scale for 5 species of vertebrates and 2 of invertebrates 

 (figs. 108 and 109). 



^1 



Total Water Load 



Fig. 108. Equilibration diagrams for 4 species of vertebrates. Rate of total water 

 exchange (% of Bo/hour) in the first 1.0 hour of recovery in relation to mean water load 

 (% of Bo). Dog, from figure 13; Man, from figure 61; Frog, from figure 66 (corrected 

 to 1.0 hour) ; Rat, from figure 73. 



■= 4 



-^ 2 



-4 



-3 -2 -I +1 +2 +3 +4 



Total Water Load 



Fig. 109. Equilibration diagrams for 3 species. Rate of total water exchange 

 in the first 1.0 hour of recovery in relation to mean water load. Earthworm, from 

 figure 89; Phascolosoma, from figure 87 (B) ; Garter snake, from figure 80. 



