262 



Banal Afefabolism of Strine 



Experiments have been made at a series of temperatures ranging 

 from 10-3° C. to 23-7° C. 



It is not possible to state exactly what was the temperature of the hog's 

 surroundings. Take for instance the experiment at what we have called 

 13'3° in Fig. 2. The water entered the circulating pipe at 13'3° and left it 

 at 13".5°. The average temperature of the calorimeter body was therefore 

 somewhere between these teniperatnre.s. The ventilating air entered 

 the calorimeter at 12'4° and left at 14•4^ What then was the effective 

 temperature of the calorimeter from the point of view of the hog's 

 metabolism ? One can only make a guess. In order to have something 

 definite the writers have adopted the temperature of the inlet water as 

 defining the temperature of the hog's surroundings, fully realising that 

 the actual effective temperature is probably a little different. The point 

 is not one of any great consequence as the critical temperature is rather 

 indefinite. It is not strictly a temperature but a set of circumstances of 

 which temperature is the most important, for air circulation, humidity, 

 etc. are not without effect. 



Table I. 



The time is given in hours since the last meal. 



In the 23'7° experiment the earlier readings were lost through a 



defect in the galvanometer circuit. 



Table I shows the whole of the observations that have been made. 

 At the head of each section is given the date on which the hog left the 

 calorimeter, his weight at thf 



end of the fast before receiving his first 



