from "the constant and continued exertions of the two bloods, the one endeavouring to overpower the other," there is no war waging in the progeny between the blood of sire and dam; the secret lies in the animal being unsuited for the pasture where it is produced. Place it in a country possessing a herbage something between that of the Highland and Cheviot hills, and it will do passing well; but do not ascribe the want of success to a natural hatred of the breeds. Again, do not fall into the error, that "the figure, wool, and other qualities, of the Cheviot ram, are most conspicuous (in this cross) in the smallest and feeblest of the progeny, while the properties of the mountain breed are more fully exhibited in the strongest and most robust lambs," a circumstance which, unfortunately, induced many of the store-farmers "to throw aside the best of the lambs, and select those to breed from, which had apparently most of the Cheviot figure;" or, in other words, do not suppose, as Mr Hogg strangely enough infers, that only the weak animals took on the Cheviot form, and only the strong ones assumed the Highland character. The correct explanation is, that such as had most Cheviot blood were sure to become puny, from being unadapted to a herbage on which those that resembled the mountain stock throve tolerably well. Strength and feebleness were, in this instance, mere secondary matters. (91.) _Things to be attended to in Crossing._--The fact is, that, if you wish to have a _particular kind_ of sheep, you must first of all be in possession of a pasture suitable for the new comers. You must consider the influence of the individual parents on the progeny, the size of the animals, their habits and dispositions, and their peculiarities in regard to the time of their maturity, and fattening properties; and, having anticipated these apparently trifling affairs, you must see that the surface of your farm, its degree of exposure, and the quantity and quality of its productions, are calculated for the profitable maintenance of the animal in view. Far too little attention is bestowed, at the commencement of such an undertaking, on these all-swaying matters. Farmers enter upon this, the most arduous of all professions, with the settled conviction, that nothing is so simple as the engrafting of a race of animals on a particular part of a country. They have read, or heard, of others who have gained fame, and a fortune, by successful endeavours of the kind, and they think that nothing is easier than to follow their example; but they forget the thoughtful hours, and irksome duties, these men had to tolerate, before they could speak of any thing like success. No animal can be made to forego at once a long used food, an ancient locality, peculiarity of clime and season, and the instinctive habits that have been long nurtured by these, without both it and its progeny suffering from the change:--Nature cannot thus be made to bend to human