KEPORTS OF THE BUILDING COMMITTEE. 633 



B. — Under the central rear tower, and the campanile and octagonal towers — 1st, a 

 course of stone seven feet wide and two feet thick ; 2d, a course of stone five feet 

 wide and two feet thick. 



C. — Under all the remaining towers — 1st, a course of stone five feet wide and two 

 feet thick ; 2d, a course of stone four feet wide and two feet thick. 



D. — Under all the walls of central huilding — 1st, a course of stone four feet and a 

 half wide and two feet thick ; 2d, a course of stone three feet eight inches wide and 

 one and a half foot thick. 



E. — Under the connecting ranges and principal partition walls, the foundation 

 will be three feet six inches wide, and four feet six inches in height. 



F. — Under the wings — 1st, a course four feet wide and two feet thick ; 2d, a course 

 three feet six inches wide and two feet six inches thick. 



G. — Under the piers supporting the clerestory of the gallery of art, a foundation 

 of stone four feet square on the bottom, two feet six inches square on the top, and 

 three feet in height. 



H. — Under all the remaining piers, for the columns of library, lecture-room, &c. r 

 a foundation two feet square, and three feet six inches in thickness. 



I. — Under all the remaining partition walls a course of long stone, three feet six 

 inches in length, and riot less than eight inches in thickness, will be laid. 



Under all the porches and buttresses, the foundation will be of the same section 

 and materials as the walls they are connected with, and they will be well bonded to 

 them. All the remaining stone work, necessary to complete the foundation, will be 

 performed ; areas and coal slides will be built to all the openings to the furnace cel- 

 lars, in the towers, and to the basement windows, of such dimensions as may be 

 directed by the architect. The faces of the walls will be well hammer dressed, and 

 neatly pointed. 



The mortar for all the above stone foundation walls shall consist of the best hy- 

 draulic lime, and clean sharp sand, mixed in the best proportions, and thoroughly 

 tempered. 



Brick masonry in foundation. — Inverted arches, of the best hard brick, will be 

 turned under all the openings of the foundation, of the thickness of the walls in 

 which they are placed, and of such other dimensions as the architect shall direct. 

 The arches will be laid in the most true and even manner, with very close joints, 

 which will be well slated up, to prevent all settlement in the mortar. 



Groined arches of the best hard brick, laid in the best manner, with close joints, 

 the 7-key courses being grouted up and slated, will be turned under the two central 

 front towers, and space between them, the central rear tower, the campanile and 

 octagonal towers of the main building, and the tower of the west wing. The arches 

 will be nine inches, or one brick thick, and will be backed over with spandrils and 

 haunch walls, and the floors above them will be of the best North river flag, axed 

 smooth on the upper surface, and cut true and even in the joints. 



Partition walls. — The main partition walls of the central building will be of stone, 

 in the foundation as above described. The lesser partition walls, for the rooms in 

 the connecting ranges and wings, will be laid up of the best hard brick, and of the 

 following section: 1st, a course of bricks 18 inches wide, 5 inches high ; 2d, a course 

 of bricks 14 inches wide, 5 inches high; and for the remainder of the height, or nine 

 feet, they will be nine inches in thickness, and of the lengths shown on plans. 



All the above brick masonry shall be hud with the closest possible joints, especially 

 in the arches, which shall be slated in the joints, and all the bricks shall be well wet 

 before they are laid. Proper openings for doors, with semi-circular arched heads 

 turned over them, shall be built in the walls, in the places shown on the plans, and 

 where the architect shall direct. 



Arches of brick, of such dimensions as the architect shall direct, will be turned 

 behind all the stone arches of the windows and doors. 



The mortar for all the above brick masonry shall be composed of best hydraulic or 

 ground lime, or a mixture of hydraulie cement and lime in paste, mixed with the 

 best clean sharp sand, and thoroughly tempered. 



All the remaining stone and brick masonry necessary to complete the foundation to- 

 be performed by builder, whether specified or not. 



