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Though perhaps the qualities of activity and strength may be found in animals pos- sessing different forms, and may be con- joined with a shape otherwise valuable, yet size isa circumstance which attaches to particular breeds in such a way as not to be rapidly alterable, if due regard be had to the healthy state of the stock. Neither are the properties of general hardiness, and a disposition to early maturity, such muta- ble traits of character, as would enable the same breed to suit with different situations and circumstances, or thrive equally well in them. Indeed, in these and other respects, a diversity of breed or character would be- come highly requisite, and even necessary,

Besides, the formation of distinct races, by animals occupying different situations, and being subjected to the influence of different powers, or different modes of treatment, though a process slow and gradual, and perhaps often unobserved, is altogether unavoidable; and it is, in some measure, happily so, that the land may be the better or more easily replenished. The discussion, then, about the practicability and propriety

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