450 Oil the Composition of Oxen, Slieep, and Pir/s, 
blood, all taken together, give an average rtrfi/a/ weight per head 
— for the five store sheep of 7f lbs., for the hundred fat ones of 
111 lb§., and for the forty-five very fat ones of 12^ lbs. The rate 
of increase in actual weight as the animals fatten is, therefore, 
rather greater for these last-mentioned organs or parts than for 
the collective stomachs and intestines, and contents. Still, they 
decrease — though not so much as the collective stomachs, &c. — 
in percentage to the whole body with the increase in weight and 
fatness of the animals. Thus, the percentage of the heart and 
other parts above classed with it is, for the average of the five 
store sheep 8'44, for that of the hundred fat ones 7'71, and for 
that of the forty-five very fat ones G'55. 
Of the internal parts, the loose fat alone increases in both 
actual weight, and percentage proportion, with the progress of the 
animals. It averages in actual weight — for the store or lean sheep 
about 4^ lbs., for the fat ones about 8t lbs., and for the very fat 
ones about 14|- lbs. In percentage j)7'0]iortion it averages — for the 
lean sheep 4'52, for the fat ones 6'03, and for the very fat ones 
7-44. 
The results, as regards the collective or total offal parts, and 
the total carcass parts, respectively, are as follow : — The total 
offal parts increased in average actual iceights per head, from 
42^ lbs. in the store or lean condition, to 58f lbs. in i\ie fat, and 
to 68f lbs. in the very fat condition. The increase in actual 
weight of the corresponding carcasses was much greater, namely, 
from 49| lbs. in the store, to 851 lbs. in the fat, and to nearly 
123 lbs. in the very fat condition. 
The result is, then, that although the collective internal organs 
and other offal parts increase considerably as the animals fatten, 
the so-called carcass or frame — with its muscles, membranes, 
vessels, and fat — increases very much more rapidly. 
It follows, of course, that there is a diminishing percentage in 
the entire body of the total offal parts, and an increasing per- 
centage of the total carcass parts, as the animals mature and f atten. 
Thus, the percentage of the collective offal parts is, in round 
numbers — for the average of the lean sheep 45'5, for that of the 
fat ones 40'5, and for that of the very fat ones 35'8. The per- 
centages of the carcass parts were, on the other hand — for the 
corresponding lean animals 53"4, for the fat ones 58*9, and for 
the very fat ones 64'0.* 
The practical importance of these facts will be better seen if 
they are stated in another form. Thus it follows, from the data 
* It will be noticed that the sums of the corresponding offal and carcass parts, 
here quoted, do not quite make up 100. The complementary amounts represent 
the loss by evaporation, error in weighing, &c. 
