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96 



rections of architect, as will also be the rear vestibule of the museum under 

 the gallery. 



The ceiling of the porch and vestibule, or stair hall of chemical lecture- 

 room, one ceiling of campanile tower, and one ceiling on the first floor of 

 the octagonal tower, will also be groined per directions of architect. 



The ceiling of the principal porch will be groined per directions oi 

 architect. 



The east cloister will be furred for a flat ceiling, with square panels and 

 heavy ribbing. 



The ceiling of the great lecture-room will also be panelled with heavy 

 ribbing. 



All the remaining ceilings in the building, and of the towers to the top, 

 will be cross-furred. 



Bracketing. — At the intersection of all the groins, as also when they 

 meet the walls, and on all the rib lines shown on the ground plans, brack- 

 ets for ribs will be formed in the best manner, to receive four (4) nails to 

 each lath. Cornices will be bracketed out whenever required. All the 

 pillars will be bracketed, as well as the half and quarter pillars, on the 

 walls. Brackets for pillars will be set on the outside of all the wooden* 

 door jambs, and at all tlie window jambs. There will be a boss or half- 

 boss at every intersection of the ribs, all which bosses will be strongly 

 bracketed, and in general all the bracketing necessaiy to complete tlie 

 building will be furnished and put up. 



All the above furring will be made of three thicknesses of 1^ inch plank, 

 strongly nailed and spiked together, and strongly hung from the floor and 

 roof beams, by two inch plank. 



All the brackets will be secured in the strongest manner. 



Seats, ^'c. — The lecture-rooms and their galleries will have handsome 

 settees of black walnut, with fronts carved to the shape of old stalls to 

 each. The settees to have neat cap moulds and backs, and to be finished 

 and carved in the best manner. 



All the above black walnut will be oiled with the best raw linseed oil, 

 three coats, well rubbed in. 



Platforms and stage. — At one end of the great lecture-room a platform 

 will be raised fi'om 4 to 8 feet fi'om the floor, for the length of one of the 

 bays, to form a stage, and will have in front of it, and at the same level, 

 an octagonal projection for the lecturer. The front of the platform will be 

 wainscoated with narrow black walnut, 1^ inch plank, tongued and grooved, 

 and not more than four inches in width. The plank will be set on end, 

 and will be neatly capped. On the projection a handsome carved table of 

 black walnut will be provided, and a seat for the lecturer. Over the stage 

 a canopy will be formed of joists, well framed, hanging down five feet from 

 the ccihng, to conceal the rollers on which the illustrations are to be placed, 

 and on each side of the stage a partition of joists (3 by 4 inches) will be 

 carried out from the walls as far as the line of the front of the gallery, and 

 terminating at the last pillar of the gallery. Thirty rollers of wood, six 

 inches (6 inches) in diameter, and twenty-five feet (25 feet) long, will be 

 hung behind the canopy. The rollers will have iron axles at their ends, 

 working in iron eyes; and each roller will have a twelve inch sheave at one 

 end for an endless cord to pass over, to work them. The ends of these roll- 

 ers will also be concealed by a canopy of 3 by 4 inch joist hanging down 

 five feet (5 feet) from the ceilings, and well framed. 



