GROUP XXIII. AGRICULTURAL MACHINES, IMPLEMENTS OF AGRI CULTURE, HORTICULTURE, AND GARDENING. Class 670.—Tillage. Manual implements,—spades, hoes, rakes. Animal power machinery,—plows, cul tivators, horse-hoes, clod-crushers, rollers, harrows. Steam power machinery,—plows, breakers, harrows, cultivators. Class 671.—Planting. Manual implements,—com-planters and hand drills. Animal power machinery,—grain and manure drills; com and cotton planters. Steam power machinery,—grain and manure drills. Class 672.—Harvesting. Manual implements,—grain cradles, sickles, reaping hooks. Animal power machinery,— reapers and headers. Mowers, tedders, rakes, hay elevators, and hay loaders. Potato diggers. Class 673.—Preparatory to Marketing. Thrashers, clover-hullers, com-shellers, winnowers, hay-making apparatus. Class 674.—Applicable to Farm Economy. Portable and stationary engines, chaffers, hay and feed cutters, slicers, pulpers, corn mills, farm boilers and steamers, incubators. Churns for hand and power, butter-workers, cans and pails, cheese-presses, vats, and apparatus. Class 675.—Dairy fittings and appliances. Class 680.—Laying out and Improving Farms. Clearing, stump-extractors, construction of roads, draining, irrigating apparatus, models of fences, gates, drains, out-falls, dams, embankments, irrigating machinery, stack building and thatching. Class 682.—'Transportation. Wagons, carts, sleds, harness. (See also Group XXVII.) Yokes, and apparatus for road making and excavating. (For traction engines, see Group XVIII.) Class 683.—Farm Buildings. Models and drawings of farm houses and tenements, barns, stables, hop-houses, fruit- driers, ice-houses, wind-mills, granaries, barracks, apiaries, cocooneries, aviaries, abattoirs, and dairies. vii
