THE UTILIZATION OF ENERGY. 485 
Computed by Kellner’s method, the percentage of the metabo- 
lizable energy of the hay which was recovered as gain of tissue was 
as follows, as compared with the results obtained by the writer’s 
method: 
PERCENTAGE OF METABOLIZABLE ENERGY RECOVERED. 
Computed b Computed b: 
i : Writer's 
ellner’s the ee 8 
Method. Method. 
ORs acs katana 42.8 40.4 
Hay Vins seer ates ios sears, anatein etch 37.7 36.2 
Average ......... 40.2 8.3 
Ox H, Period 2). Se. 4 
eH en \ 49.9 | 48.4 
Hay VI........ biases ats Ee AD iiids eae nate nae 35.8 34.8 
L| Average. ......... 42.8 44.5 
Average of V and VI....|........----- ee eee 41.5 41.4 
Computing the results upon the gross energy of the digested 
matter of the hay, Kellner obtains the following: 
DISTRIBUTION OF ENERGY OF DIGESTED MATTER, 
Work of — 
Digestion, 
In Urine. In Methane. | Assimilation, In Gain. 
Per Cent. Per Cent. and Tissue Per Cent. 
Building. 
Per Cent. 
Hay: Visecssascpeads 8.2 11.5 48.00 32.3 
yy dy Sapa gana ees 8.8 9.0 48.10 34.1 
Average........- 8.5 10.3 48 .00 33.2 
As in some previous cases, the numerical results of the two 
methods of computation do not vary greatly, but their essentially 
different significance should not be forgotten. 
Oat Straw.—For the single sample of this feeding-stuff experi- 
mented on, the results, arranged in the same order as before, were 
as follows: 
‘ 
