524 MB. J. B, LAWBS AM) BE. J. H. GIIBEEI ON THE COMPOSITION OP 
Carcass. In the fat Pig. however, omng to the much smaUer proportion 
the percentage of dry matter in the bone being so nearly the same ^ that in the total 
cIrL, the percentage of dry substance in the soft pmts will not differ matenaffy ffom 
*“rw“re"da^^ adduced on the point, it may perhaps be safely concluded, 
that the average of Carcass beef, in well-fattened condition, wffl contain oO per cent., or 
X m oTdry substance /that the average of properly fattened — will contain 
r/ther more di-y matter than beef, say, 56 to 60 per cent. ; that the Cmcasses of Pigs 
killed tov fresh pork will be rather drier than those of mutton; whilst the sides of Pigs 
killed lo/curing will, no doubt, be drier still. Lamb carcasses would seem to contmn 
a smaller proportion of total diy substance than either moderately fattened beef, mutto , 
or pork. Then- proportion of bone is also comparatively high. Lastly, twl appears 
be Le most wateiy of all. The Car cass of the Calf experimented upon 
was considered to be well-fattened, contained only 37f per cent, of dry substan , 
proportion of bone was also higher than in any of the other cases. 
Turning to the second division of Table VII.. which shows the composition of the 
oolleotive offal parts (excluding contents of stomachs and “ 
show such a uniform tendency to a diminution in the percentage of i^eial matter 
coiiicidently with that of the nitrogenous substance, as was observed m the case ot t 
Carcasses. But, as ah-eady referred to. the percentage of mineral 
Offal parts (and it is this which is here under notice), does not represent only the minei.ll 
/Ir projerly associated with the other constituents of the pari, but includes a giian- 
tity of adventitious matter adhering to the pelt, hair, or wool, of the animals. 
It is seen that the percentage of diy nitrogenous substance is, m eveiy case, ^eatei. 
and tha of the fat very muchlss, in the collective Offal, than hi the collective Carcass 
parts In Oxen and sLep. the pelt, hair or wool, hoofs, and for the nmst part stomachs 
ind intestines, as well as some other nitrogenous parts of the Offal, w ill not be “nsuni 
r hLan food. The parts that will as a rule, or at least frequently be so consumed, 
are the head flesh with tongue and brains, the heart, Bie liver, the J' 
the diaphragm, and sometimes the lungs. Calculation leads us to estimate 
nitrogenous substance of these parts will in these animals (beasts “'J, ^ 
about one-sixth of the whole nitrogenous matter of their collectii e OftaW s P 
of edible nitrogenous substance from the Offal parts must, therefore, be added to t e 
amount estimated as eaten from the Carcass, when considermg the proportion 
nitrogen of the slaughtered animals which is appropriated as human food Calculation 
S shows, howev/r, that in the cases of Oxen and Sheep, the w hole of the .utrogenou 
liter reclaimed as food from the Offal pai-ts will fall short of the amount coiitaine in 
the bones of the Carcass. So nearly, however, will these quantities balance one anothm 
(especially if a portion of the gelatine from the carcass bones be coiiridered as ea . 
that the total nitrogen of the Carcass parts, excluding any froni ^ ^ 
be taken as little exceeding the average proportion of the ivhole nitrogen ot 
