The annual exhibition of this association is to be held in the Empire City Skating Rink Building, corner of Sixty-third street and Third avenue. New York city. The building was opened for the reception of articles and machinery to be exhibited on the 1st September, and is now well stocked with a large variety of things, comprised under the following departments, which will be more fully noticed in stibsequent issues of our paper. 1. The Department of Fine Arts and Education, consisting of paintings on canvas, glass, etc., engraving, lithographs, photographs, sculpture, musical instruments, specimens of printing and bookbinding, philosophical instruments, etc. 2. The Department of the Dwelling, comprising apparatus for warming, lighting, cooling and ventilating, cooking stoves, kitchen utensils, carpets, oil cloths, tapestry, cabinet furniture, table furniture, ornaments for parlors, building accessories, mantels, grates, etc. 3. The Department of Dress and Handicraft, including wearing apparel for both sexes, sewing machines, artificial limbs, wigs and hair-work, jewelry, trunks, umbrellas, etc. ] 4. The Department of Chemistry and Mineralogy—soaps, . toilet preparations, acids, leather, furs, india-rubber and gut- ta-percha preparations, paints, dye stuffs, sugars, confection- , ery, minerals, ores, apparatus for making gas, natural stones ( used in building, etc. 5. The Department of Engines and Machinery—machines for making wood, metal, and all tools used by artisans or in j factories, not otherwise provided for. 6. The Department of Intercommunication, containing locomotive engines, cars, carriages, wagons, sleighs, models of ocean-or river vessels, electric telegraphs, etc. ] 7.* The Department of Agriculture and Horticulture—speci- ( mens of plants and flowers, fruits, vegetables, butter, cheese, plows, cultivators, mowers, reapers, churns, cheese presses, ) hemp, flax, cotton, etc. i Each of the above departments is to*be divided into seven 1 groups, articles of like nature being kept together. In addi- tion to this there is the display of the National Association t of Wool Maniifaotnrerg. i The main building is 350 feet in length by 170 feet i width, giving an area of 59,500 square feet. A new buildin, has been erected at the easterly end of the Bink, 200 fee long by 50 feet "wide, for the exhibition of machinery drive by steam. Two engines, of 90-horse power each, furnish th motive power for the machinery on exhibition, among whic" there are pumps, engines, a file cutter, lathes, planing ms chines, Merrill's tilt and atmospheric hammer and drop press spinning machines, steam hammers, a Bullock printing press Lyall's positive motion loom, and many other of the newes inventions for divers uses. The steam boilers for driviuj this mass of machinery are located in the rear of the ne building. A large blacksmith's forge of new invention i also placed here, and is in constant operation. There ar also many minor mechanical improvements on record, whic] will be noticed more in detail hereafter. The exhibition is likely to prove a very successful and ir teresting one, and will doubtless be largely attended.