A word might also be added about barn-_yards_. The planning and management of these, also, depends much upon the course the farmer has to pursue in the keeping of his stock, the amount of waste litter, such as straw, &c., which he has to dispose of, and the demands of the farm for animal and composted manures. There are different methods of constructing barn-yards, in different parts of the country, according to climate and soils, and the farmer must best consult his own experience, the most successful examples about him, and the publications which treat of that subject, in its connection with farm husbandry, to which last subject this item more properly belongs. RABBITS. It may appear that we are extending our "Rural Architecture" to an undue length, in noticing a subject so little attended to in this country as Rabbit accommodations. But, as with other small matters which we have noticed, this may create a new source of interest and attachment to country life, we conclude to give it a place. It is a matter of surprise to an American first visiting England, to see the quantities of game which abound at certain seasons of the year in the London and other markets of that country, in contrast with the scanty supply, or rather no supply at all, existing in the markets of American cities. The reason for such difference is, that in England, Scotland, Wales, and Ireland, every acre of the soil is appropriated to some profitable use, while we, from the abundance of land in America, select only the best for agricultural purposes, and let the remainder go barren and uncared for. Lands appropriated to the rearing of game, when fit for farm pasturage or tillage, is unprofitable, generally, with us; but there are thousands of acres barren for other purposes, that might be devoted to the breeding and pasturage of rabbits, and which, by thus appropriating them, might be turned to profitable account. All the preparation required is, to enclose the ground with a high and nearly close paling fence, and the erection of a few rude hutches inside, for winter shelter and the storage of their food. They will burrow into the ground, and breed with great rapidity; and in the fall and winter seasons, they will be fat for market with the food they gather from the otherwise worthless soil over which they run. Rocky, bushy, and evergreen grounds, either hill, dale, or plain, are good for them, wherever the soils are dry and friable. The rabbit is a gross feeder, living well on what many grazing animals reject, and gnawing down all kinds of bushes, briars, and noxious weeds. The common domestic rabbits are probably the best for market purposes, and were they to be made an object of attention, immense tracts of mountain land in New Jersey, Pennsylvania, and the New York and New England highlands could be made available for this object.