Mr. Hart's plantation is a very fine one, and he is one of the largest hemp-growers in Kentucky. He has done much to introduce a system of water-rotting hemp in ponds, which we think is the best and most simple of the kind yet tried. He has promised us a description of this, with his late improvements, and we trust that we shall be favored with it soon, for the benefit of those desirous of preparing their hemp for market by the pond-water-rotting process. There is so much in common with Kentucky plantations, that it is unnecessary to dwell further upon particulars. Mr. Hart's stock of cattle is principally derived from the first importation of the Short-Horns into Kentucky, in 1817. He keeps a flock of about 800 Merino sheep, which, low as wool is, he thinks make him as good, if not a better return, than anything else which his plantation produces. Sheep-husbandry is attracting much attention at present in Kentucky. It is a very superior region indeed, for sheep, and if the planters would go judiciously into the fine-woolled breeds, wool would soon become an article of large export with them, and a source of considerable profit. Let it be remembered, that the cheaper and better wool can be produced, the more there will be consumed of it; and the cheaper and better, woollen cloths will be furnished in return. We need not fear overstocking the country in our generation. Mr. Hart keeps quite a herd of deer in his park, and several head of elk. These last, with their large branching horns, and lofty, erect heads, have a noble appearance. He formerly had a few buffaloes, but they became so troublesome in breaking down fences, and sallying out whenever they pleased, to the great terror of the country round, that he was at last obliged to kill them. Buffalo bulls get somewhat ferocious as they grow old, and are rather dangerous animals on the plantation. While in Kentucky, we picked up some comic anecdotes of their doings as they turned out; but a feather's weight in the other scale might have made them equally tragical; and upon the whole, unless enclosed within a fence that they could not break down, we should advise our friends to eschew keeping buffaloes. BREEDS OF FOWLS. IN perusing the American Poultry Book, which we noticed in our October No., we find the following recommendation for selecting a stock for the poultry-yard:--