REPORTS OF THE BUILDING COMMITTEE. 637 



panelled with rich ribs, having foliage bosses at their intersections. All the columns, 

 and half columns, in the center of the piers between the windows, all the window 

 and door jambs and arches of the above rooms, to be of the form and workmanship 

 hereinbefore described. 



All the columns, window jambs and arches, door jambs and arches, ribs, &c, of 

 all the above described rooms and halls, to be laid off in courses to represent stone. 



All the remaining plaster work, both plain and ornamental, necessary to complete 

 tho building, will be performed by the contractor, whether specified or not. 



The mortar will be made of the best Potomac or Thomaston finishing lime, and 

 clean sharp sand, mixed in the best proportions, and thoroughly tempered. The 

 plaster for the hard finish and gaged mortar to be of the best quality. 



All the arres, angles, ribs, pillars, &c, to be kept perfectly plumb, true, and even. 



Coloring of walls. — All the walls which are not hard finished will be colored by a 

 mixture of lime-water and white, green, and blue vitriol, as may be directed; with 

 which such colors, as the architect shall direct, shall be mixed. 



The coloring shall be put on in two or three coats, and the last coat shall be colored 

 different shades on the diiferent parts of the walls, ceilings, &c. 



Deafening. — All the floors which are not formed on groined ceilings, or on iron 

 beams with brick arches between them, will be deafened with a mixture of lime, 

 clay, and sand mortar, laid on of such thickness as the architect shall direct. 



Iron work. — All the copings, cornices, battlements, window jambs and mullions, 

 sills, chimney caps, and, in general, all the stone work, &c, will be tied together 

 with strong wrought-iron clamps, anchors, dowels and rods, well leaded to the stone 

 work, and of such dimensions as may be directed by the architect. 



Wrought-iron bars f-inch in diameter, and of the widths of the different windows 

 to the outside of the jambs, will be used where directed, to tie the centre mullions to 

 the jambs, especially in the octagonal story of the large central tower, and in the 

 greater and lesser octagonal, and the small square towers of the central building. 



A bar of £ by 2 inch wrought-iron will be carried all around both stories of the 

 larger octagonal tower, and around the smaller octagonal, and the small square tow- 

 ers of the central building, on a level with the spring line of the arches of the win- 

 dows. 



Gratings, of £ by 1J inch wrought-iron, will be furnished for the areas of the dif- 

 ferent towers. 



Lightning rods. — Five lightning rods, of wrought-iron, one and a half inch in 

 diameter, will be furnished by the mason. They will be furnished with elbows, glass 

 thimbles, and platina points, of the best description, and will be put up in the follow- 

 ing places : one on the great central front tower, one on the campanile tower, one on 

 the octagonal tower, one on the tower of the west wing, and one on the tower of the 

 chemical wing ; and they will be carried ten feet above the tops of the towers to 

 which they are attached. 



Flagging. — The floors of the basement, of the chemical or east wing, and its vesti- 

 bule, and the east connecting range, shall be flagged with the best North river flag, 

 laid perfectly level, true, and even, and dressed in the joints, and laid in at least 12 

 inches, of clean sharp sand and gravel, with at least six cesspools, four feet in diam- 

 eter and six feet deep, under each of the above parts of the building. 



The cellars under the front towers, and the space between them, as well as those of 

 the central, rear, campanile, octagonal, and tower of the west wing, will be similarly 

 flagged. 



After the flag are laid, the joints will be grouted with a mixture of cement and 

 sand. 



The floors of the two cloisters will be flagged with best North river flag, axed per- 

 fectly smooth on the upper surface, and the stones will be of equal size from two to 

 three feet square, and laid diamond-wise in cement-mortar. 



The floors of the two galleries of art, in the western wing and western connecting 

 range, will be flagged with the best North river flag, axed perfectly smooth, and cut 

 to the form of octagons, of equal size, not more than two feet in diameter. The 

 squares between the octagons will be filled with tiles of white marble or of red Seneca 

 stone, as may be directed by the architect, and this will be laid in best cement and 

 6and-mortar. 



The floors of the vestibules and central hall will be flagged with the octagon and 

 square as above. 



All the joints of all the above flagging will be cut perfectly true, and the tiles will 

 be bedded on the best cement and sand-mortar. 



