42 



PHYSIOLOGICAL EEGULATIOISTS 



of water prevailing (figs. 26 and 27), it becomes explicit that the 

 rates during loading are not equivalent to those during unloading. 

 Hence even the procedure of repeated administration has its time 

 factors, but not of a sign that would be concerned with lag in ab- 

 sorption of administered water. During unloading, rates are 

 nearly linearly proportional to the loads. 



2 4 6 



Hour^ 

 Fig. 21. Course of total water load (% of Bo) when water is administered by 

 stomach tube in ten equal portions (1.00 or 0.60 % of Bo each) during the first 2.5 hours. 

 Dog, 2 individuals. The actual loads found by weighing are connected by dotted lines, 

 while the mean loads of each 0.25 hour are marked by points. After 2.5 hours the points 

 are actual body weights. New data of Kingsley and Adolph. 



Comparing figure 26 with figure 6, and figure 27 with figure 7, 

 I find that the rates of output during recovery from repeated water 

 administration are less than during recovery from single doses. 

 I think the difference is significant in spite of the fact that diverse 

 individuals, and the same individuals in dissimilar stages of accli- 

 matization to water excesses, were used in some of the tests that 

 are averaged. Hence it may be concluded that the rate of recovery 

 depends not only upon the magnitude of the load but also upon the 



