566 ME. J. B. LAWES AND DE. J. H. GILBEET ON THE COMPOSITION OF 
r,roQremm in the maturity and fatness of the fattening animal, upon the relative deve- 
lopLnt of its several organs or parts. An examination of the Tables shows, that the 
inteiml organs, and other offal parts, pretty generaUy increme m actml weight ^ the 
animal passes from the store or lean, to the fat, or to the Tei 7 fat conation. Exc ud^ 
the fat however, their percentage proportion to the whole hve-weight, as mvanably 
Mmmiihes as the animal matures and fattens. Of the intemal offal pa^, the loose fat 
alone increases, not only in actual weight, but m percentage proportion. The carcasses, on 
the other hand, invariably increase in both actml and percentage amount as the ai^als 
mature. These remarks apply generaUy to Oxen, Sheep, and Pigs ; but the data relating 
to the Sheep comprise the most complete gradationaiy series for their illustration. 
To go a little into detail: the average actual weights per head^of the coUective 
stomachs, and intestines, and their contents, increased from about ISJlbs m the five 
store or lean sheep, to aboutlSflbs. in the 100 /«« Sheep, and to about lOilbs. amo^ 
the forty-five rery fat ones. The percentage of these parts m the entae weight of the 
animal, diminished from 14-35 for the store sheep, to 10-79 for the fat ones, and to b-o4 
for the very fat ones. Again, the “heart and aorta,” the “lungs and windpipe the 
“blood,” the “liver,” the “gall-bladder and contents,” the “pancreas, and the mdt 
or splein,” taken together, give an average actual weight per head, for the 
Sheep of 7|lbs., for thel00/«f ones of llilbs., and for the forty-five Wl-y/at ones of 1, lbs. 
The proportional increase in actual weight as the animals fatten, is rather greater t ere- 
fore for these organs and parts than for the collective stomachs and intestines, and con- 
tents. Still they decrease (though not so much as the collective stomachs, &c.) m 
percentage to the whole body with the increase in weight and fatness of the animals. 
Thus (tie percentage of the heart and other parts here classed with it, is tor the average 
of the five store Sheep 8-44, for that of the 100 /«< ones 7-71, and for riiat ot the forty- 
five vei-v fat ones 6-55. As already said, of the internal parts the loose fat alone increasos 
in both actml weight and percentage relation to the whole body with the progress ot 
the ..hnials It averages in actual weight, for the store or lean Sheep about Ij lbs., 
tor the fat ones about 8f lbs., and for the veiy fat ones about 14i lbs.; and m pe>- 
eentage proportion to the whole body, 4-52 for the lean Sheep, 6-03 for the fat, and ,-44 
for the very fat ones. 
Turning from this more detailed wew to notice the actual, and relative development ; 
of the collective or total Offal parts, and the total Carcass parts, respectively, the remit , 
is as follows : — The average actual weights per head, of the total Offal parts, inciease 
from 42f lbs. in the store or lean condition, to 58f lbs. in the fat, and to 6b^lhs. in tae 
very fat condition. The increase in actual weight of the corresponding Carcasses 
greater ; namely, from 49f lbs. in the store, to 85f lbs. in the/a^, and to nearly I ..0 ibs. 
in the very fat condition. That is to say, although the collective Offal parts increase 
considerably as the animals fatten, the Carcass—or frame, with its muscles, membranes, 
vessels and fat— increases proportionally very much more. The result of this muc 1 
