"Fancy" Fowls are among the hobbies of our day, as was abundantly evinced at the State Fair. Coops piled on coops, and in rows twenty rods long, of Chinese, Dorking, and other breeds of the most popular domestic bird, monopolized a large share of attention; while geese, ducks, turkies, &c., were liberally and creditably represented. The "Hen Convention," which was a pet topic of Boston waggery a year or two since, might have been easily and properly held at Rochester. Many of these choice barn-yard fowls were scarcely inferior in size while doubtless superior in flavor to the ordinary turky, while the farmer who opens the spring with a hundred of them may half feed his family and at the same time quite keep down his store-bill with their daily products. Small economies steadily pursued are the source of thrift and competence to many a cultivator of flinty and ungenial acres; few farmers can afford to disregard them. If thrice the present number of fowls were kept among us, their care and food would scarcely be missed, while their product would greatly increase the aggregate not only of thrift but of comfort. [Illustration: J. DELAFIELD'S CHINESE HOGS.] "Floral Hall" was the name of a temporary though spacious structure of scantling and rough boards, in which were exhibited, in addition to a profusion of the flowers of the season, a display of Fruits and Vegetables whereof Rochester might well be proud. This city seems the natural centre of the finest fruit-growing district on the American continent--yes, in the whole world. Its high latitude secures the richest flavors, while the harsh northern winds, which elsewhere prove so baneful, are here softened by passing over lake Erie or Ontario, and a climate thus produced, which, for fruit, has no rival. Large delicious grapes of innumerable varieties; excellent peaches; delicate, juicy, luscious pears; quinces that really tempt the eye, though not the palate; and a profusion of fair, fragrant, golden, mammoth apples,--these were among the products of the immediate vicinity of Rochester exhibited in bounteous profusion. In the department of Vegetables also there were beets and turnips of gigantic size; several squashes weighing about one hundred and thirty pounds each; with egg-plants, potatoes, tomatoes, and other edibles, which were all that palate could desire. The fertility of western New-York is proverbial; but it was never more triumphantly set forth than in the fruit and vegetables exhibited at the State Fair.