74 UNITED STATES NATIONAL MUSEUM 



places, and metal has been used in both stories for a number of the 

 communicating doors which are so distributed as to furnish com- 

 plete fireproof walls at intervals in each of the sections enclosed by 

 the corridor partitions. In the third story the doors of the toilet 

 and housekeeping rooms and the closets under the several attic stairs 

 are of wood. 



The doors of both materials are made alike on the two sides. They 

 are constructed with a single large sunken panel, except in the case 

 of the entrance doors in the ranges of the third story, which have 

 two panels, one above the other, the upper being of glass to facilitate 

 the lighting of the corridors. The wood doors are of red oak veneer 

 on a core of white pine, stained a slightly greenish brown color and 

 having a dull cabinet finish. The metal doors are of molded pressed 

 steel, with the stiles and rails If inches, and the panel ^-g inch thick, 

 the latter being surrou.nded by ;J-inch molding. The space inter- 

 vening between the metal of the two sides is filled with a fire-resisting 

 composition. These doors are painted and grained in close imitation 

 of the wood doors, and while much heavier their greater weight is 

 scarcely appreciable in opening and closing. 



In the ground story the stiles and top rail of all doors are 5 inches 

 wide, while the bottom rail is 12 inches wide and in all entrance 

 doors has built into it a cast-iron electro-bronze plated register of the 

 width of the panel and 6 inches high, to aid in the circulation of air 

 between the corridors and the rooms. The single paneled doors in 

 the third story have the same width of stiles and top rail, but the 

 bottom rail is only 8J inches wide and lacks the register opening. 

 These measurements also apply to the entrance doors in the ranges 

 of the third story, which, however, have an intermediate rail 6 

 inches wide at a height of 3 feet 2 inches to its center above the 

 floor. The lower and smaller panel so formed is of metal, but the 

 upper is set with ribbed and wired glass. 



In the 9-inch brick walls of the ground story the doors are hung 

 at one side of the opening, the inner in the case of entrance doors, and 

 the other side has a plaster reveal returning into the jambs and stop- 

 ping against wood bucks. With the metal doors, a metal staff bead 

 covers the joint between the plaster and the buck and metal trims 

 are provided on the door side, the bucks being thereby wholly covered 

 with steel. Wood trims accompany the wood doors. 



In the 2-inch expanded metal and plaster partitions of the third 

 story most of the door openings are framed by 2-inch channel iron 

 bucks, which, in the case of entrance but not of communicating doors, 

 extend 3 feet 4 inches above the door for transom purposes. The 

 upper 8 inches of this area has a ventilating screen of No. 12 bronze 

 wire with |-inch mesh, the remaining space being glazed with ribbed 

 wire glass. All transom bars and all parts connected with the ma- 



