IV.-Classified list of patents, &c.—Continued.

CLASS VIII.-Mathematical, philosophical, and optical instruments, including clocks, chronometers, &c.

CLASS IX.-Civil engineering and architecture, comprising works on rail and common roads, bridges, canals, wharves, docks, rivers, weirs, dams, and other internal improvements, buildings, roofs, &c.

CLASS X.-Land conveyance, comprising carriages, cars, and other vehicles used on roads, and parts thereof.

IV.—Classified list of patents, &c.—Continued.

CLASS XI.-Hydraulics and pneumatics, including water-wheels, windmills, and other implements operated on by air or water, or employed in raising and delivery of fluids.

IV.-Classified list of patents, &c.—Continued.

CLASS XII.-Lever, screw, and other mechanical power, as applied to pressing, weighing, raising, and moving weights.

CLASS XIII.-Grinding mills and mill-gearing, containing grain mills, mechanical movements, and horse-powers, &c.

CLASS XIV.-Lumber, including machines and tools for preparing and manufacturing, such as sawing, planing, mortising, shingle and stave, carpenters' and coopers' implements.

IV.-Classified list of patents, &c.—Continued.

CLASS XV.-Stone and clay manufacture, including machines for pottery, glass making, dressing and preparing stone, cements, and other building materials.

IV.-Classified list of patents, &c.—Continued.

CLASS XVI.-Leather, including tanning and dressing, manufacture of boots, shoes, saddlery, harness, &c.

CLASS XVII.-Household furniture, machines, and implements for domestic purposes, including washing machines, bread and cracker machines, feather dressing, &c.