NATURAL HISTORY BUILDING 105 



referred to as used by the watch force, opens into the entrance lobby. 

 All of the other rooms communicate with the central hall, the doors 

 occurring uniformly in the middle of each of the interspaces between 

 the attached piers except three. The public comfort and toilet rooms 

 occupy two units on each side of the wing, and are entered by the 

 two doors nearest the lobby. The two rooms on the west side adjoin- 

 ing the south pavilion, and therefore near the auditorium, are fitted 

 up for the use of committees and for small scientific meetings, while 

 the remaining rooms, four in number, are reserved for temporary 

 exhibitions. 



South pavilion. — From the north wing one first enters that part 

 of the corridor in the south pavilion which has been finished as a 

 lobby for the auditorium, and which, together with the auditorium, 

 has been described in a previous connection. Beyond the steel doors 

 at the ends of this lobby, the continuation of the corridor, which is 

 but plainly finished, gives access to the east and west wings by open- 

 ings 10 feet wide by 12 feet 4 inches high, and to the driveway 

 whence the large vault under the south approach is reached. This 

 vault furnishes a floor area of about 2,225 square feet suitable for 

 the storage of supplies. The tower stairs and south passenger ele- 

 vators have their lower landings on this floor, while the four rooms 

 contained in the south projection and one at the side are utilized for 

 the manufacture and storage of ice, for one of the large fans of the 

 ventilating system, and for housekeeping purposes. 



East wing. — The description of the east wing in connection with 

 the mechanical equipment of the building leaves little to be said here. 

 The boiler and engine rooms occupy the middle of the wing, and are 

 followed at the inner or western end by the large generator and dis- 

 tribution switchboards. The suite of four rooms on the court side 

 comprises the office of the engineer and the machine and plumbing 

 shops. The wider series of rooms along the south front, with the 

 exception of one enclosure used for toilet purposes, constitutes the 

 construction and repair shops for furniture, etc. The coal bunker is 

 at the northeast corner of the wing. Adjoining it on the side is the 

 wagon drive for the delivery of fuel, with a depth of 41 feet 2 inches 

 from the entrance and a width of 19 feet 3^ inches. It is followed at 

 the end of the wing by a large compartment originally intended and 

 equipped as a reserve coal bunker, but now used for the storage of 

 building supplies. Between this room and the front of the boiler 

 room is a corridor 18 feet 1^ inches wide, giving access to the car- 

 penter shops. 



The construction shops, four in number, which occupy nearly the 

 entire south side of the wing, are fitted up for the building and repair 

 of furniture and for work connected with the maintenance and repair 

 of the building. They are enclosed on the north side by a continuous 



