of gallery floor, 92,496 square feet; total area of floor space, 249,691 square feet, or about 5¾ acres. The total amount of space on the floor occupied by different countries for exhibition, exclusive of the naves, was about 152,000 square feet, divided as follows: The United States 54,530; Great Britain, 17,651; Switzerland, 4,428; the German Zollverein, 12,249 Holland and Belgium, 3,645; Austria, 2,187; Denmark, Sweden, and Norway, 4,231; Russia, 729; the West Indies, 1,093; British Colonies, 5,798. The total number of exhibitors was 4,383. Of these 1,778 were from the United States; 677 from England; 116 from Switzerland; 813 from the German Zollverein; 155 from Holland and Belgium; and 100 from Austria. The exhibits were divided in 31 general classes as follows: Class I, Minerals, Mining, and Metallurgy, Geological and Mining Sections and Plans. Class II, Chemical and Pharmaceutical Products and Processes. Class III, Substances Employed as Food. Class IV, Vegetable and Animal Substance Employed in Manufactures. Class V, Machines for Direct Use. Class VI, Machinery and Tools for Manufacturing. Class VII, Civil Engineering, Architectural, and Building Contrivances. Class VIII, Naval Architecture, Military Engineering, Armor and Accoutrements. Class IX, Agricultural, Horticultural, and Dairy Implements. Class X, Philosophical Implements and Products Resulting from their Use. Class XI, Manufactures of Cotton. Class XII, Manufactures of Wool. Class XIII, Manufactures of Silk and Velvet. Class XIV, Manufactures of Flax and Hemp. Class XV, Mixed Fabrics. Class XVI, Leather, Furs, Hair, and their Manufactures. Class XVII, Paper, Stationery, Types, Printing, and Book-binding. Class XVIII, Dyed and Printed Fabrics. Class XIX, Tapestry, Carpets, Floor-cloths, Lace, Embroideries, Trimmings, and Fancy Needlework. Class XX, Wearing Apparel. Class XXI, Cutlery and Edge Tools. Class XXII, Iron, Brass, Pewter, and General Hardware. Class XXIII, Works in Precious Metals and their Imitations. Class XXIV, Glass Manufactures. Class XXV, Porcelain and other Ceramic Manufactures. Class XXVI, Decorated Furniture and Upholstery. Class XXVII, Manufactures in Slate and other Ornamental Stones. Class XXVIII, Manufactures from Animal and Vegetable Substances not Woven or Felted. Class XXIX, Miscellaneous Manufactures, Perfumery, and Toys. Class XXX, Musical Instruments. Class XXXI, Fine Arts.