NATURAL HISTORY BUILDING 61 



The north wing between the north lobby and the south pavilion 

 contains two lengthwise partitions built in sections between the piers 

 of the outer rows and joining them near their outer edges. The 

 greater part of each pier, therefore, projects on the central space or 

 hall, which also contains two other rows of identical but detached 

 piers. The central hall is 147 feet 2J inches long and 52 feet 11 

 inches wide, while the side enclosures are 30 feet 5 inches wide. The 

 latter contain the main comfort and toilet rooms and other com- 

 partments. 



The subdivision of the west wing closely follows the typical plan. 

 The middle part of the wing has been enclosed in a large but sub- 

 divided compartment, the walls of which are built between the piers 

 of the outer rows excluding the crossrow at the extreme west and 

 the easternmost pier of the northern row. These walls extend from 

 the floor to the ceiling without transoms or other openings than those 

 for the doors, of which there is one in each 18^-foot unit on the north 

 and south sides. The piers between which the walls are built stand 

 mostly within the enclosure, but project to the extent of 4f inches on 

 the outside of the walls. The compartment is divided lengthwise 

 through the middle by a continuous wall of macite, and again by two 

 cross partitions of the same material into four subcompartments of 

 unequal size, designed for the storage of alcoholic specimens. 



Corridors on the north and south sides of the central compartment 

 separate it from the window-lighted spaces, along the outer and court 

 walls, which are subdivided into rooms, with door openings opposite 

 those of the large compartment. These corridors are enclosed at 

 their outer ends by walls provided with double doors. There is a 

 locker and toilet room in the northeast corner of the wing, and two 

 large rooms in the northwest and southwest comers, at the sides of 

 the inner driveway with which they communicate as well as with 

 the body of the wing. 



In the east wing, the entire southern side, to a maximum width 

 of 33 feet 6 inches, has been separated from the remainder of the 

 wing by successive partitions built between the piers of the southern 

 row, and partly provided above with large fixed glass transoms or 

 borrowed lights. The space so enclosed along the south front is sub- 

 divided into three large and two small rooms, all of which, except 

 one of the latter used for toilet purposes, are equipped as construction 

 and repair shops, and have large communicating openings, 8 feet 

 wide by 10 feet high, fitted with fireproof doors of special design. 

 The long partition bounds on the south the space occupied by the 

 steam and electrical plant, which is entirely open at the western 

 end. The boiler room is enclosed on three sides and a partition 

 extends along the north side of the engine room. Separated from 

 the latter by a corridor is a series of small rooms facing the court 



