The frame of this building is of strong timber, and stout for its size. The sills should be 8 inches square, the corner posts of the same size, and the intermediate posts 8x6 inches in diameter. In the center of these posts, grooves should be made, 2 inches wide, and deep, to receive the _plank_ sides, which should be 2 inches thick, and let in from the level of the chamber by a flush cutting for that purpose, out of the grooves inside, thus using no nails or spikes, and holding the planks tight in their place, that they may not be rooted out, or rubbed off by the hogs, and the inner projection of the main posts left to serve as rubbing posts for them--for no creature so loves to rub his sides, when fatting, as a hog, and this very natural and praiseworthy propensity should be indulged. These planks, like the posts, should, particularly the lower ones, be of _hard_ wood, that they may not be eaten off. Above the chamber floor, thinner planks may be used, but all should be well jointed, that they may lie snug, and shut out the weather. The center post in the floor plan of the engraving is omitted, by mistake, but it should stand there, like the others. Inside posts at the corners, and in the sides of the partitions, like the outside ones, should be also placed and grooved to receive the planking, four and a half feet high, and their upper ends be secured by tenons into mortices in the beams overhead. The troughs should then, if possible, be made of _cast iron_, or, in default of that, the hardest of white oak plank, strongly spiked on to the floor and sides; and the apartment may then be called hog-proof--for a more unquiet, destructive creature, to a building in which he is confined, does not live, than the hog. The slide, or spout to conduct the swill and other feed from the feeding-room into the trough, should be inserted through the partition planks, with a steep _slant_ the whole length of the trough, that the feed may be readily thrown into any or all parts of it. This slide should be of two-inch white-oak plank, and bound along the bottom by a strip of hoop-iron, to prevent the pigs from eating it off--a habit they are prone to; then, firmly spiked down to the partition planks, and through the ends, to the adjoining studs, and the affair is complete. With what experience we have had with the hog, and that by no means an agreeable one, we can devise no better method of accommodation than this here described, and it certainly is the cheapest. But the timber and lumber used must be sound and strong; and then, properly put together, it may defy their most destructive ingenuity. Of the separate uses to which the various apartments may be put, nothing need be said, as the circumstances of every farmer will best govern them.