544 PRINCIPLES OF ANIMAL NUTRITION. 
Metabolisable 
nergy Oo: Work, Utilization, 
Seas Cals. Per Cent, 
Cals. 
1892, 
Period V........+-.5e0e- 20,605 2803 
CES TIT oc ciyiiep vais aeseesudiors 19,091 2152 
1,514 651 43.00 
1892-93. 
Period II.........eeee005 22,163 3024 
«  Tand IIL.......... 19,295 2126 
2,868 898 31.31 
Period IVb .............. 21,131 2752 
“~~ TandTIl.......... 19,295 2126 
1,836 626 34.10 
Period V as escs i eee sie 23,278 3352 
“Land Ds sisccs avs 19,295 2126 
3,983 1226 30.78 
Period Vic............66. 23,728 3655 
« Tand ITl.......... 19,295 2126 
4,433 1529 34.48 
1893-94. 
Period Whss ccc eesans scars 23,288 3653 
Oe Te anes careers yd 19,430 2122 
3,858 1531 39.68 / 
Period V......0..eeeees 23,208 3645 
EB RS TM arsenide waxstevnusis Seago 19,430 2122 
3,778 1523 40.31 
Period VI............... 24,488 3948 
ear espe tne A 19,430 2122 
\ 5,058 1826 36.10 
Totals and averages, ex- 
cluding 1891-92...... 31,066 11,408 36.73 
With the exception of the experiments of 1891-92, which were 
the first with the new form of dynamometer and which Wolff con- 
siders unsatisfactory, we have but two cases in which the apparent 
utilization does not exceed 31.3 per cent. Having eliminated the 
uncertainty as to the maintenance ration, and the figures for the 
energy of the food being regarded as substantially correct, this can 
