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Felted or Woven Goods of Wool, etc ; 242–249, Silk and Silk Fabrics; 250–257, Clothing, Jewelry, etc. ; 258–264, Paper, Stationery, Blank Books, etc.; 265-271, Weapons, etc. ; 272-279, Medicine, Surgery, etc.; 280–284, Hardware, Edge Tools, Cutlery, and Metallic Manufactures ; 285-291, Fabrics of Vegetable, Animal or Mineral Materials; 292-296, Carriages, Vehicles, etc. Department III. Education and Science, comprising Classes 300-309, Educational Systems, Methods, and Libraries; 310-319, Institutions, etc.; 320–329, Scientific and Philosophical Instruments, etc.; 330-339, Architecture, Engineering, Surveying, Maps, etc. ; 340–349, Physical, Social, and Moral Condition of Min.

Visitors coming in carriages alight under cover at the East en rance; those in street cars, at the South entrance. To inspect the exhibits in this building, it is estimated that the visitor will traverse about eleven miles within its walls. Excellent views of the entire interior may be obtained from balconies arranged in the four central towers.

Although the Art exhibits are classified in Department IV., the visitors will doubtless generally pass from the Main Building to the Machinery Hall, and we shall take this

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Machinery Hall covers 1,402 feet in length by 360 in width, with an annex on the south, 210 by 208 feet. The ground plan shows two main avenues 90 feet wide by 1,360

feet long, with a central aisle between and an aisle on either side. Each aisle is 60 feet in width; the two avenues and three aisles making the total width of 360 feet. At the centre of the building is a transept of 90 feet in width, which at the south end is prolonged beyond the main building. This transept, beginning at 36 feet from the main hall and extending 208 feet, is flanked on either side by aisles of 60 feet in width, and forms the annex for hydraulic machines. The superstructure consists of solid tinber columns supporting roof trusses, constructed with straight wooden principals and wrought-iron ties and struts. As a general rule the columns are placed lengthwise of the building, at the uniform distance apart of 16 feet. The columns are 40 feet high to the heel block of the 90 foot span roof trusses over the avenues, and they support the heel of the 60 foot spans over the aisles, at the height of 20 feet. The outer walls are built of masonry to the height of 5 feet, and above that are composed of glazed sash placed between the columns. Portions of the sash are movable for ventilation. Louvre ventilators are introduced in continuous lengths over both the avenues and the aisles. The principal portion of the structure is one story in height, showing the main cornice upon the outside at 40 feet from the ground, the interior height to the top of the ventilators in the avenues being 70 feet, and in the aisles 40 feet. To break the long lines upon the exterior, projections have been introduced upon the four sides, and the main entrances finished with façades, rising to 78 feet in height. The east entrance will form the principal approach from street cars, from the Main Exhibition Building, and from the railroad depot.

The exhibits in this Building form Department V., and comprise Classes 500-509, Machines, Tools, etc., of Mining, Chemistry, etc.; 510-519, Machines, Tools, etc., for working in Metals, Wood, and Stone; 520–529, Machines and Imple

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transepts, composed of Howe truss arches of a Gothic form. The nave is 820 feet in length by 125 in width, with a height of 75 feet from the floor to the point of the arch. The central transept is of the same height, with a breadth of 100 feet, the two end transepts 70 feet high and so wide. The materials used are wood and glass.

Agricultural exhibits form Department VI., and comprise Classes 600-609, Agriculture and Forest Products; 610-619, Pomology of all parts of the world; 620-629, Agricultural Products; 630-639, Land Animals; 640-649, Marine Animals, Fish Culture, etc.; 650 664, Animal and Vegetable Products, used as Food or as Mate

rials; 665-669, Textile Substances THE WOMEN'S PAVILION.

of Vegetable or Animal Origin ;

670-679, Implements, Machines, ments for Weaving, Spinning, etc. ; 530-539, Machines, etc., | and Processes of Manufacture; 680–689, Agricultural Enfor Sewing, manufacturing Clothing, etc.; 540-549, Ma- gineering and Administration ; 690-699, Tillage and Genchines connected with Printing, Book making, Papermaking, eral Management, etc. ; 550-559, Power Generators, Motors, etc.; 560-569, In addition to this Hall, a tract of 22 acres outside of the Hydraulic and Pneumatic Apparatus ; 570-579, Railway Grounds, and some 500 yards from the principal entrance, Plant, Rolling Stock, etc.; 580-589, Machinery designed has been provided for the reception and exhibition of livefor preparing Agricultural Products; 590-599, Arial, Pneu- stock; the exhibitions are to be as follows: September 1 to 15, matic and Water Transportation. Besides these, there will | Horses, Mules, and Asses ; September 20 to Oct. 5, Horned be the Apparatus and Machinery especially adapted to the requirements of the Exhibition.

The 1,400 horse-
power Corliss engine
in the centre of the
main hall will in itself
prove one of the most
impressive features of
the Exhibition ; it is
capable of driving all
the shafting for all the
machinery exhibits; it
has a 40-inch cylinder
with 120-inch stroke.
The main lines of
shasting extend almost
the entire length of
the building,
height of 18 feet

above the floor, and
with the counter-shaft-

ing extending into the
avenues, it will be seen that the facilities provided are Cattle; October 10 to 25, Sheep, Goats, Swine, and Dogs;
ample to meet all possible requirements.

October 25 to November 10, Poultry. These exhibitions of The Agricultural Hall (second engraving on page 390) is live-stock will be on the grandest scale. And besides all this, 826 feet by 540 feet. It consists of a nave crossed by three provision has been made for trial of machinery by the secur

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The Centennial Con. servatory, known as Horticultural Hall, is an exceedingly hand some structure, appropriate in its appointments, and in its style as well, to its purpose. It is 383 feet long and 193 wide, and is substantially built, with a view to its permanency, the materials used being stone, brick, iron and glass. The main floor is occupied by the central conservatory, 230 by 80 feet, and 55 feet high, surmounted by a lantern 170 feet long, 20 feet wide, and 14 feet high. Running entirely around this conservatory, at a height of 20 feet from the floor, is a gallery 5 feet wide. On the north and south sides of this principal room are four forcing. houses for the propagation of young plants, each of them 100 by 30 feet, covered with curved roofs of iron and glass. Dividing the two forcing-houses in each of these sides is a vestibule 30 feet square. At the centre of the east and west ends are similar vestibules, on either side of which are reception rooms, offices, etc. From the vestibules ornamental stairways lead to the internal galleries of the con servatory, which afford fine views of the entire interior, and which communicate with four external galleries, each

100 feet long and 10 ing of suitable lands on the Pennsylvania Railroad, 30 min- | the roofs of the forcing-houses. These external galleries

feet wide, surmounting utes from the Exhibition Grounds, where trials of Harvesting are connected with a grand promenade, formed by the roofs machines will take place during June and July, and of Tilling of the rooms on the ground floor, which has a superf:cial machines during September and October.

1 580 square yards. From this promenade may be had


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