NET AVAILABLE ENERGY—MAINTENANCE. 443 
than for the unfattened, but how much higher can hardly be deter- 
mined from such averages. 
Comparing the results on the one animal common to the two 
series of experiments we have— 
Live Weight, | Maintenance, 
Kgs. Cals. 
Observed: 
Unfattened.............. 611.5 16,835 .6 
Fattened................ 750 18,959 .6 
Computed to 800 kgs.: 
Unfattened.............. 800 20,140 
Fattened................ 800 19,800 
According to the above figures the maintenance ration of this 
animal was practically proportional to the two-thirds power of its 
live weight. On the other hand, however, its maintenance require- 
ment in the unfattened state was much higher than the average 
for the seven unfattened animals, while after fattening it did not 
differ materially from the average for the three fattened animals. 
Tf, then, we are to regard the above result as correct we must 
assume that by chance all three of the fattened animals had a 
higher normal rate of metabolism than the seven unfattened ones, 
which is not exactly probable. Although this leaves the question 
in a rather unsatisfactory state, it would seem that we must be 
content to let it rest there pending further comparative experi- 
ments on identical animals in different stages of fattening. 
