432 
REroRT—1854. 
the food. It 
food, more was 
case there was 
constituents consume 
than in pens 1 and 2; and it is probable that both Sugar and Starch being 
allowed in this pen, the greater variety of food increased the appetite, flirre 
was also with this greater consumption of now-nitrogenous substance more 
both of actual increase of animal, and of increase for a given weight of ni- 
tror/enous substance consumed, though somewhat less of it in proportion both 
to the non-nitrogenous substance and to the total dry organic substance».( 
*t may likewise be said of pen 4, that with greater variety in the 
vas eaten in relation to the weight of the animal. But 10 t u ‘ 
vas more of the nitrogenous as well as of the non-nitrogenous 
...consumed ; ami with ibis larger and probably more normal pro¬ 
portion of the latter to the former, wc have, as is seen in the next a ' 
(VIII.), a better proportion of gross increase both to the non-m rogc 
substance, aud to the total organic substance consumed. 
But the amount of food consumed to a given weight ot animal, a» 
in Table VII.. represents of course, not only the demands for the' 
nance of the animal machine, that is, of the respiratory and couac ^ 
tions, but also those for the growth and permanent increase ot »® •. j uf . 
also in Table VIII., the average amount of foods consumed loj' ^ * oft 
tion cf 100 lbs. of increase includes also those required tor 1 e , 
and other functional purposes. In our former Paper, however,, rea > , 
it was shown that in the case of a futteuing pig then referred o, J jB 
15 per cent, of the dry substance of the food consumed ' ver ‘ .j . su b. 
the animal a9 non-aqueous increase ; about 85 per cent, ot or ynidd- 
stance of the food of the animal being therefore expired, P eW ?', ’ v be 
Although, however, so small a proportion of the food consume ' j 
ally stored up in the animal, still a comparison of the amouutso 
or constituents consumed to produce n given weight of met jiUctc*- 
°t much importance as a measure of the relative feeding qu 
articles of diet; and this is the point illustrated in I able • 
In this Table (VIII.), comparing first together the ream 
we find that not only, as lias been already seen, was the ra . ri i*. 
of the dry organic substance of the Starch and Sugar exae ^ nt3 ,T«|ui^ ! 
tion.to the weight of the animal, but here it is found that the identic 1: 
to yield a given Increase in the weight of the body arc also e« j^ji* ol 
for 41 lbs. of total dry substance were required to pro , n onp-tliu-' 
increase when one-third of the food was Sugar, and 410 4 iw. {l , j< 
of it was Starch. The equivalency of the two would seen ^tcdi 51,1 
Clearly proved, both for the purpose of the maintenance °J 
for that of the increase of the body of a fattening animal. Ag f ^ 
.-"•» •ncijmreu ^aoios. 111 pen o, wiieru- , nr0 noru«- 
constituents was about the same as in pens 1 and % bu ! i va bout 
non-nitrogenous constituents eaten was rather greater; Q1,{ *° * conSt iiuc^ 
were required in pen 4, where the consumption therefor®' 
was somewhat greater than in the other eases. Wi! lst js freq 111 ' 1 . r 
nave shown in other Papers, as our current food-stuffs g<-> ituC1) ts 
tiietr now-nitrogenous rather than their nitrogenous cQ “L ve |ia«‘ 1:1 
n re . tl, f. ,rcombi,,ed respiratory am! feeding capacities,) B 
usefully indicated, as also in other cases, the point below 
amount of nitrogenous constituents is disadvantageous. gneS to - t,lJ • 
. I "„rK Cl r s “ n ’ .**. "M™* Of direct «pe.iu.c»t eleariJJ^r^ 
. ... evtuence or direct espenuic-u. , '-sue® 1 
that all but identical amounts of the dry substance of C*“ given 
£ a 1 rch are *>?th consumed by a given weight of animal 
and are required to yield a given weight of increase. The P<» 
