The nature of the animal determines, as I have already stated, the proportion of its food carried off in its increase; but this point is also greatly influenced by its _variety_, or _breed_. Certain breeds which have for a long period been kept on bulky food, and obliged to roam in quest of it, appear to have acquired a normal tendency to _leanness_. No doubt, if they were supplied with highly nutritious food for many successive generations, these breeds might eventually exhibit as great a tendency to fatten as they now do to remain in a lean condition. As it is, the horned cattle of Kerry, Wales, and some other regions, rarely become fat, no matter how abundantly they may be supplied with fattening food. On the other hand, the Herefords, but more especially the Shorthorns, exhibit a natural disposition to obesity, and such animals alone should be stall-fed. It is noteworthy that animals which are naturally disposed to yield abundance of milk are often the best adapted for fattening; but it would appear that the continuous use of highly fattening food, and the observance of the various other conditions in the _forcing_ system, diminish the activity of the lacteal secretion, and increase the tendency to fatness in the races of the bovine tribe. The Shorthorns were at one time famous for their milking capabilities, but latterly their galactophoric reputation has greatly declined. Still I am disposed to believe, that if some of those animals were placed under conditions favorable to the improvement of dairy stock, herds of Shorthorn milch cows could be obtained which would vie in their own line with the famous fat-disposed oxen of the same breed.